The Aviation DataBase: Service Information: Bell Helicopter Textron
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Alert Service Bulletins
NameRevisionLangSubjectDate
en Stabilizer Bar Assembly P/N 47-140-2483/21/1974
A en Change to Airworthiness Limitations Schedule8/11/2000
B en Change to Airworthiness Limitations Schedule7/22/2010
A en Mandatory Replacement Interval for Tail Rotor Yokes P/N 47-641-057-9 is Reduced to 400 Hours11/18/1975
en One Time Inspection of Main Rotor Blades Box Beam Clips5/26/2008
A en Inspection of Control Tubes in Cyclic and Collective Systems which are Mounted Vertically or Within 30 Degrees of Vertical for Possible Corrosion12/11/1973
reiss en Texas Helicopter Co. Engine Mount, 74-612-171-115, -115C or 74-612-171-123, -123C Retirement Life, Reduction of1/12/2015
1 en Engine Throttle Linkage Installation and Safety Procedures ((Related Docs))11/1/2016
en Tail Rotor Control Pedal Assemblies4/10/1947
revised en Replacement of Engine Cooling Fan Shaft Washer8/28/1950
en Stabilizer Bar Damper Support Frame4/6/1948
en Inspection Procedure for Sudden Stoppage of Main Rotor3/2/1949
en Replacement of Tail Boom Extension Drive Shaft and Installation of Tail Rotor Drive Shaft Spline Coupling11/11/1949
en Inspection of Ventral Fin8/10/1949
en Replacement of Ventral Fin1/6/1950
A en Modification of Engine Cooling Fan Installation and Replacement of Upper Fan Drive Pulley2/5/1953
E en Inspection of Engine Mount Assembly - P/N 47-612-111-1 or -54/21/1954
A en Torsional Stiffening of Root End of Tail Rotor Blades9/21/1951
en Replacement of Main Rotor Blade Grip Adapter Locks11/2/1951
en Mandatory Removal from Service of Tail Rotor Hub Bolts P/N 47-641-052-3 and -5 and Seals P/N 47-641-042-11/5/1976
en Replacement of Tail Rotor Blades and/or Blade Sets P/N 47-642-102-7, -9, -19, -27, -29, -33, -39, -41, -45, -51, -53, -57, -63, -65, -69, -75, -77 and -812/13/1976
en Replacement of Main Rotor Blade Equalizer Horns and Drag Brace Fittings11/2/1951
en Inspection of Tail Rotor Gear Box, P/N 47-640-075-1 and -72/14/1977
en Replacement of Stabilizer Bar Damper Lever and Link11/2/1951
A en Installation of Engine Mount Guards7/7/1952
en Tail Rotor Blade P/N 47-642-102 (All Dash Numbers) Mandatory Retirement Life, Reduction12/4/1979
B en Installation of Tail Rotor Hub and Blade Assembly, P/N 47-641-1702/4/1981
en Replacement of Tail Rotor Blade Grip Retaining Screw11/2/1951
en Installation of an Additional Safety Washer, P/N 47-641-195-101, with the Tail Rotor Pitch Link, P/N 47-641-172-52/14/1980
A en Installation of an Additional Safety Washer, P/N 47-641-195-101, with the Tail Rotor Pitch Link, P/N 47-641-172-54/29/1980
en Replacement of Bearing, P/N 47-620-605-001, with Bearing, P/N 47-620-929-0015/15/1980
en Installation of Tail Boom Spoiler11/2/1951
en Modification of Engine Cooling Fan11/2/1951
C en Inspection Tail Rotor Gear Box Shaft: P/N 47-645-028-1 or 47-645-051-1 or 47-645-077-12/19/1953
en Inspection/Replacement of Incorrect AN/NAS Standard Bolts Installed in Certain Flight Control Applications7/26/1983
B en Inspection and Rework of Pinion Shaft, P/N 30-613-3614/29/1953
en Mandatory Replacement of Tail Rotor Blade Assembly, P/N 47-642-117-1, S/N'S A-8 through A-7210/16/1984
en Installation of Loading Chart and Fuel Tank Dip Stick3/1/1952
B en Installation of Steel Safety Straps on Engine Mount Assembly P/N 47-612-111-1 or 52/12/1953
D en Addition of Sleeve, P/N 47-640-058-1 to Tail Rotor Drive Assembly, P/N 47-640-044-310/29/1954
en Mandatory Inspection of Tail Rotor Blade Assembly, P/N 047-642-117-105, S/N A-1943 through A-20681/29/1996
en Link Assembly, P/N 047-140-159-001/-007, Damper to Stabilizer Bar, Installation of Safety Washer P/N 047-140-254-1018/16/1996
C en Replacement of Tail Rotor Pitch Control Links, P/N 47-641-032-14/19/1957
en Installation of Stop Assembly, P/N 47-722-165-1, Pedal Installation, Anti-Torque Control10/29/1954
A en Bearing Hangar Reinforcement, Installation of Support Assembly, P/N 47-267-402-17/13/1956
en Inspection and Repair of Tail Boom Longeron where Ventral Fin Braces Contact9/30/1955
A en Replacement of Lateral Cyclic Bellcrank, P/N 47-725-73-1 Attachment Bolt, P/N AN174-345/23/1956
en Inspection of Tail Rotor Extension Drive Shaft, P/N 47-644-172-31/27/1956
en Inspection of Swashplate Control Ring, P/Ns 47-150-184-1 and 47-150-184-3, Lateral and Fore and Aft Control Horns5/1/1956
en Installation of Fail Safe Synchronized Elevator Spring, Kit No. 47-2573-16/15/1956
en Installation of Anti-Torque Control Pulley Brackets Kit No. 47-2406-1A. Installation of Aft Ballast Installation, Kit No. 47-2406-1B6/1/1956
en Inspection and Replacement of 47-267-112-5 Forward Synchronized Elevator Pulley. Inspection and Replacement of 47-267-410-1 Aft Synchronized Elevator Pulley3/15/1957
A en Replacement of Tail Rotor Hub Retention Bolts, P/N 47-641-052-11/29/1958
B en Tail Rotor Pitch Change Rod Assembly - Replacement of AN960-416 Bearing Washer10/23/1956
A en Fore and Aft - Lateral Cyclic Raulic Boost Power Cylinders, Replacement of Hydraulic Boost Power Cylinder Barrels9/7/1956
en Inspection and Rework of Tail Boom Attachment Fittings, P/Ns 47-265-026-1 and -211/9/1956
en Inspection and Rework of Synchronized Elevator, P/N 47-267-406-7
en Inspection and Rework of Rotor Hub Equalizer Link Assembly, P/N 47-120-025-12/1/1957
B en Inspection and Replacement of Parker Check Valve, P/N 1111-5177 1111-517704 and 1111-5177444/12/1957
en Modification of Engine Sprag System Spindle, P/N 47-612-167-1 - Kit No. 47-3071-13/29/1957
en Part A: Inspection of Metal Tail Rotor Blade and Hub Assembly and Pitch Control Mechanism. Part B: Inspection of Metal Tail Rotor Blades (P/N 47-642-102-5)4/2/1957
en Modification of Mixture Control - High Altitude Compensated Carburetor - Kit No's. 47-3291-1, -2 and -36/6/1958
en Rework of Index Plates - Engine Cooling Fan - P/N 47-661-801-5, which Rave Shaft Silver Brazed to Index Plate10/2/1958
C en Counterweight Bracket - Main Rotor - P/N 47-110-287-9 - Establishment of 200 Hour Life Limit6/1/1959
C en Inspection of Metal Tail Rotor Blades, P/Ns 47-642-102-1; -5; -7; -9; -17 and -198/5/1959
B en Scissors Lever Pivot Bolts and Bolt Holes, Inspection of and Installation of Safety Wire6/17/1960
C en Inspection and/or Replacement of Cooling Fan Drive Gear, P/N 47-620-530-L6/3/1966
en Inspection of Forward Cross Tube, P/N 47-512-111-9 on Float Gear6/9/1961
en Inspection of Synchronized Elevator Spar for Cracks7/27/1961
en Inspection - 47-620-535-1 Free Wheeling Outer Race12/7/1964
D en Inspection of Metal Tail Rotor Blades1/23/1968
en One Time Inspection of Equalizer Horns, P/N 47-120-167-110/9/1969
C en Tail Rotor Drive Shaft Replacement12/22/1970
en Inspection of Control Tubes, P/N 47-150-255-18/26/1971
B en Main Rotor Mast, P/N 204-011-450-001/-007/-105, Inspection and Retirement Index Number (RIN) Life Reduction8/4/2000
A en Cargo Hook, Onboard Systems P/N 528-002-009/9/2002
en One Time Inspection of Magnetic Brake P/N 204-001-376-0031/19/2001
en Ultrasonic Inspection of Main Rotor Grips 204-011-121-11711/26/2002
A en Mandatory Replacement Interval for Tail Rotor Grip Assemblies P/N 204-011-706 and P/N 204-011-728 is Reduced to 500 Hours7/25/1973
en Aeronautical Accessories, Inc. ASB No. AA-06107 for Safety Valve: Valve Stem Over Torque3/6/2007
en Assignment of a 100 Hour Retirement Life for Stabilizer Bar Mixing Lever Bearings P/N KP6A, AN201KP6A, MS20201KP6A, MS27641-6 and Scissors Assembly Pivot Bearing P/N KP8A, AN201KP8A, MS20201KP8A, MS27641-86/11/2007
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643-411/27/2007
en Scissor and Sleeve Assembly, P/N 204-011-401-021. Seal P/N 204-010-428-001 Replacement6/24/2008
en Barrel Assembly P/N 204-011-143-001, Removal from Service8/25/2008
A en Barrel Assembly P/N 204-011-143-001, Removal from Service4/24/2009
en Elevator Horn P/N 204-001-937, Assignment of Serial Number7/14/2009
en Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 204-012-102-001/-005/-0095/31/2011
B en Inspection, Sealing and Refinishing of Main Rotor Blade, P/N 204-011-250 (All Dash Numbers)5/5/1976
A en Replacement of Emergency Exit Decals and Escape Release Handle Covers8/13/1976
en Replacement of Spacers and Screws Attaching the Emergency Escape Release Handle Covers3/8/1977
en Installation of T/R Cable and Chain Damper Kit, P/N 204-706-130-1018/21/1979
en Retirement Life of Main Rotor Yoke, P/N 204-011-102-(All Dash Numbers)6/22/1981
A en One Time Use of Main Rotor Pillow Block Attachment Bolt 204-011-171-003, Washer 140-007-33S28-3 and Nut EB08010/11/1990
en Main Rotor Yoke P/N 204-011-102 All Dash Numbers, Removal from Service10/23/1992
A en Inspection of Tail Rotor Blades, P/N 204-011-702-015/-1212/12/1996
A en Main Rotor Blade 204-011-250-001, -005, -009, -113 and, -117, Introduction of Daily Wipe-Down Inspection and Special 25-Hour Inspection10/12/2018
en Clutch Assembly P/N X134296, Assignment of Retirement Life4/19/2001
en Pillow Block P/N 204-011-108-113, Tube Assembly P/N 212-010-404-005, Strap Fitting P/N 204-012-102-009, Inspection and Recall of Specific Serial Number Part7/26/2001
en Main Rotor Head Inboard Fitting 204-012-102-009, Inspection or Specific Serial Numbers10/18/2001
en 1200 Hour Special Inspection Requirements for Main Rotor Hubs Pins P/N 204-012-104-001/-003/-0056/20/2002
en Balancing and Track Requirements for Tail Rotor Hub and Blade Assembly, P/N 204-011-701-Q or 204-011-701-1512/21/1966
B en Assignment of 1000 Hour Retirement Life for Model 204B Float Gear Aft Cross Tube P/N 204-706-053-5 and 205A/A1 Float Gear Cross Tubes (Aft P/N 205-050-114-1) (Forward P/N 205-050-114-3)8/3/1970
en One Time Inspection of Collective Lever P/N 212-010-403-0053/30/2012
en P/N 205-001-720-001 Cable Assembly, One Time Inspection for Defective Body, P/N 205-001-742-00110/10/2012
en Inspection, Rework and Replacement of Main Rotor Blade Bolt 204-011-151-0015/21/2015
en Removal of Seat Belt Comfort Clips1/20/2016
en Tail Rotor Yoke 204-011-722-005 Chromate Conversion Coating12/14/2016
en Inspection of Main Rotor Blade 204-011-250-001, -005, -009, -113 and -1171/11/2017
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/3/2017
en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/5/2021
A en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/22/2021
en Tailboom Attachment Hardware, Inspection & Replacement of1/26/2022
A en Tailboom Attachment Hardware, Inspection & Replacement of2/23/2022
en Main Rotor Scissors & Sleeve Hub Assembly Collective 204-011-405-013 Identification12/20/2021
en Drag Brace Assembly 204-011-140-001, Magnetic Particle Inspection of8/24/2023
en Fin Spar 205-030-899-001/-089, 205-030-846-001/-3/003/-047/-049, 204-030-825-063/-065 Inspection10/22/1998
B en Main Rotor Mast, P/N 204-011-450-007/-105/-113/-119, Inspection and Retirement Index Number (RIN) Life Reduction8/4/2000
A en Installation and One Time Use of Tail Rotor Counterweight Bellcrank Retention Nut MS14145L6 and MS17826-69/13/2000
A en Cargo Hook, Onboard Systems P/N 528-002-009/9/2002
en Inspection and Replacement of Main Hydraulic Servo Actuator Rod End Lock Washer10/19/2000
A en Tail Rotor Blade P/N 212-010-750-009 Through -129, Tip Block Retention Modification12/20/2000
D en Tail Rotor Blade P/N 212-010-750-009 Through -129, Tip Block Retention Modification3/18/2005
en One Time Inspection of Magnetic Brake P/N 204-001-376-0031/19/2001
en Clutch Assembly P/N X134296, Assignment of Retirement Life4/19/2001
A en Pillow Block P/N 204-011-108-113, Tube Assembly P/N 212-010-404-005, Strap Fitting P/N 204-012-102-009, Inspection and Recall of Specific Serial Number Part7/30/2001
en Main Rotor Head Inboard Fitting 204-012-102-003, Inspection of Specific Serial Numbers10/18/2001
A en Float Kit Installation P/N 205-706-050-1 - Inspection of Forward and Aft Float Cross Tubes P/N 205-050-114-7 and -9 and Installation of Friction Damper Assemblies P/N 205-050-127-3 and -54/11/1973
en 1200 Hour Special Inspection Requirements for Main Rotor Hub Pins P/N 204-012-104-003/-0056/20/2002
en Inspection and Rework of Tail Rotor Blade Assemblies P/N 212-010-750-011/-113/-11511/22/2002
en Ultrasonic Inspection of Main Rotor Grips 204-011-121-11711/26/2002
en Replacement of Tail Rotor Pitch Horn Assembly P/N 212-011-708-10512/3/2004
A en Mandatory Replacement Interval for TailRotor Grip Assemblies P/N 204-011-728 is Reduced to 500 Hours7/25/1973
en Inspection of Tail Rotor Hub Assembly P/N 212-010-7018/23/1973
A en Revised Tail Rotor Rigging Procedures6/24/1974
en Crosshead P/N 212-010-775-001, Inspection and Recall of Specific Serial Number Part2/18/2005
en Inspection and Rework of Tail Rotor Blade P/N 212-010-750-009 through -1294/30/2005
en Aeronautical Accessories, Inc. ASB No. AA-06107 for PC Safety Valve: Valve Stem Over Torque3/6/2007
en Assignment of a 100 Hour Retirement Life Stabilizer Bar Mixing Lever Bearing P/N KP6A, AN201KP6A, MS20201KP6A, MS27641-6 and Scissors Assembly Pivot Bearing P/N KP8A, AN201KP8A, MS20201KP8A, MS27641-86/11/2007
en Starter/Generator Power Cable, Upgrade6/11/2007
A en Starter/Generator Power Cable, Upgrade12/8/2008
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/22/2010
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643-411/27/2007
en Flight Controls - Hydraulic Servo Actuator Recall for Undersized Radius6/17/2008
en Scissor and Sleeve Assembly, P/N 204-011-401-021. Seal P/N 204-010-428-001 Replacement6/24/2008
en Barrel Assembly P/N 204-011-143-001, Removal from Service8/25/2008
A en Barrel Assembly P/N 204-011-143-001, Removal from Service3/26/2009
en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1038/24/2009
A en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1039/21/2009
en One Time Inspection of 205-030-856-157/-159 Elevators9/24/2009
A en One Time Inspection of 205-030-856-157/-159 Elevators1/18/2010
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL11/9/2009
A en Inspection of Tail Rotor Blade P/N 212-010-750-ALL12/8/2009
en Inspection of Transmission Oil Line P/N 70-061L000V360A for Correct Length1/11/2010
en Low Skid Gear Forward Crosstubes P/N 212-320-1034/28/2010
en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/10/2010
en High Forward Crosstubes, P/N 205-050-403-031, 412-050-046-101, Mandatory Inspection6/23/2010
en Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 204-012-102-005/-0095/31/2011
en One Time Inspection of Collective Lever P/N 212-010-403-0053/30/2012
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL2/4/2013
en Flight Controls - Hydraulic Servoactuator Undersized Thread Root Radius11/18/2013
en Inspection, Rework and Replacement of Main Rotor Blade Bolt 204-011-151-0015/21/2015
en Inspection of Tail Rotor Flight Control Tube 212-001-055-101 and Bearing DAS4-14A1-5129/8/2015
en Removal of Seat Belt Comfort Clips1/20/2016
en Inspection of Main Rotor Blade 204-011-250-001, -005, -009, -113 and -1171/11/2017
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/3/2017
en Tailboom Left Hand Fin Spar Cap P/N 212-030-447-117, Inspection of4/15/2020
en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/5/2021
A en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/22/2021
en Tailboom Attachment Hardware, Inspection & Replacement of1/26/2022
A en Tailboom Attachment Hardware, Inspection & Replacement of2/23/2022
en Main Rotor Scissors & Sleeve Hub Assembly Collective 204-011-405-013 Identification12/20/2021
en Tension Rod Assembly P/N 205-030-249-009 or 205-030-249-013, Inspection of9/14/2023
en Drag Brace Assembly 204-011-140-001, Magnetic Particle Inspection of8/24/2023
en Inspection of Cap Angle, P/N 205-030-207-005, Introduction, of4/22/2024
C en Inspection, Sealing-and Refinishing of Main Rotor Blade, P/N 204-011-250 (All Dash Numbers)4/25/1979
A en Replacement and Emergency Exit Decals, and Escape Release Handle Covers8/22/1975
B en Inspection of Fire Extinguisher Cartridges3/5/1976
en Inspection of Fire Extinguisher Cartridges11/5/1975
en Assignment of 500 Hour Service Life to Float Gear Cross Tubes P/N 205-050-114-1, -3, -5, -7 and -9, and Cross Tube Assemblies P/N 205-706-050-5 and -9. Removal from Service of Damper Assemblies P/N 205- C50-127-3 and -5 (Manufactured by FriASBy)3/5/1976
en Inspection and Adjustment of Latch System, Passenger Door Emergency Escape Panels9/29/1976
A en Limit Service Life of the Upper Left Hand Tailboom Longeron Assembly to 3000 Flight Hours. Inspection, Repair and Replacement of Tailboom Attachment Fittings and Longerons6/13/1979
en Tail Rotor Pitch Change Horn P/N 212-010-716 All Dash Numbers3/11/1977
en Adding Additional Inspection Holes in the L/H and R/H Passenger Door Assemblies3/22/1977
en Replacement of Spacers Attaching the Emergency Escape Release Handle Covers6/6/1977
A en Replacement of External Cargo Hook Link Assembly P/N 205-070-944-1 or -5 with New Link Assembly P/N 205-070-944-75/11/1978
en Mandatory Installation of Tail Rotor Push-Pull Control System5/16/1978
A en Float Landing Gear Crosstube, P/N's 205-050-114-001, -003, -005, -007, -009, -011, -013, and 205-706-050- 005, -009, and -013 Mandatory Retirement and Mandatory Relocation of Forward Friction Damper9/12/1980
en Retirement Life of Main Rotor Yoke, P/N 204-011-102-(All Dash Numbers)6/22/1981
A en Inspection of Tail Rotor Trunnion Bearing Housing, P/N 212-011-716-0017/23/1986
en Replacement of Main Rotor Pillow Block to Yoke Attachment Washer, P/N AN960-8163/23/1987
A en Main Rotor Mast, P/N 204-011-450-Series and Main Rotor Trunnion, P/N 204-011-105-001, Assignment of Retirement Life8/21/1987
A en One Time Use of Main Rotor Pillow Block Attachment Bolt 204-011-171-003, Washer 140-007-33828-3 and Nut EB08010/11/1990
A en Method of Calculating Retirement Life on Subject Parts and Assignment of Retirement Lives (1) Main Rotor Mast P/N 204-011-450-All Dash Numbers (2) Main Rotor Trunnion 204-011-105-0013/21/1991
en Swashplate Support P/N 204-011-404-12512/13/1991
en Inspection of Tailrotor Driveshaft10/5/1992
en Main Rotor Yoke P/N 204-011-102 All Dash Numbers, Removal from Service10/23/1992
en Lower Spider P/N 412-040-785-101, Assignment of Retirement Life6/18/1993
A en Main Rotor Mast 204-011-450-007/-105, and Main Rotor Trunnion 204-011-105-001, Change of Retirement Life and Method of Determination2/12/1996
A en Main Rotor Blade 204-011-250-001, -005, -009, -113 and, -117, Introduction of Daily Wipe-Down Inspection and Special 25-Hour Inspection10/12/2018
A en Tail Rotor Yoke Assemblies P/N 212-010-704-All and P/N 212-010-744-All; Introduction of One-Time X-Ray Diffraction Inspection. Trunnion Assemblies: P/N 212-010-738-001: Inspection of, and Trunnion Assemblies P/N 205-012-716-001 and P/N 212-010-703-001: Removal from Service6/18/1998
en Inspection of Tail Rotor Yoke P/N 212-011-702-All, and Installation of Tail Rotor Flapping Stop/Yield Indicator P/N 212-011-713-1039/3/1996
A en Inspection of Fin Spar Cap 212-030-447-001/1019/21/1998
A en Fin Spar 205-030-899-101, 205-030-846-087/-089, 205-032-851-003/-007/-009 Inspection9/21/1998
en Fin Spar 205-030-899-101, 205-030-846-087/-089, 205-032-851-003/-007/-009 Replacement9/25/1998
B en Fin Spar 205-030-899-101, 205-030-846-087/-089, 205-032-851-003/-007/-009 Replacement2/28/2000
B en Assignment of 1000 Hour Retirement Life for Model 204B Float Gear Aft Cross Tube P/N 204-706-053-5 and 205A/A1 Float Gear Cross Tubes (Aft P/N 205-050-114-1) (Forward P/N 205-050-114-3)8/3/1970
A en Inspection and Modification of 205A/A-1 Tail Boom Vertical Fin Forward Spar P/N 205-032-8516/14/1971
en Chip Detector Assembly, Tedeco B37033/30/2001
B en Main Rotor Mast, P/N 204-011-450-007/-105, Inspection and Retirement Index Number (RIN) Life Reduction8/4/2000
A en Installation and One Time Use of Tail Rotor Counterweight Bellcrank Retention Nut MS14145L6 and MS17826-69/13/2000
A en Cargo Hook, Onboard Systems P/N 528-002-009/9/2002
en Inspection and Replacement of Main Hydraulic Servo Actuator Rod End Lock Washer10/19/2000
A en Tail Rotor Blade P/N 212-010-750-009 Through -129, Tip Block Retention Modification12/20/2000
D en Tail Rotor Blade P/N 212-010-750-009 Through -129, Tip Block Retention Modification3/18/2005
en One Time Inspection of Magnetic Brake P/N 204-001-376-0031/19/2001
en Chip Detector Assembly, Tedeco B37033/30/2001
en Clutch Assembly P/N X134296, Assignment of Retirement Life3/19/2001
en Pillow Block P/N 204-011-108-113, Tube Assembly P/N 212-010-404-005, Inspection and Recall of Specific Serial Number Part7/26/2001
B en Ultrasonic Inspection of Main Rotor Grips 204-011-121-005, -009, -113, -117 and -12111/22/2002
en 1200 Hour Special Inspection Requirement for Main Rotor Hub Pins P/N 204-012-104-003/-0056/20/2002
en Inspection and Rework of Tail Rotor Blade Assemblies P/N 212-010-750-11711/22/2002
en Replacement of Tail Rotor Pitch Horn Assembly P/N 212-011-708-10512/3/2004
en Crosshead P/N 212-010-775-001, Inspection and Recall of Specific Serial Number Part2/18/2005
en Inspection and Rework of Tail Rotor Blade P/N 212-010-750-009 through -1294/30/2005
en Aeronautical Accessories, Inc. ASB No. AA-06107 for PC Safety Valve: Valve Stem Over Torque3/6/2007
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/22/2010
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643-411/27/2007
en Flight Controls - Hydraulic Servo Actuator Recall for Undersized Radius6/17/2008
en Scissor and Sleeve Assembly, P/N 204-011-401-021. Seal P/N 204-010-428-001 Replacement6/24/2008
en Starter/Generator Power Cable, Upgrade12/8/2008
en Inspection of Main Rotor Blade P/N 212-015-501-005, -111, -113, -115, -117, -119 and -12112/19/2008
A en Inspection of Main Rotor Blade P/N 212-015-501-005, -111, -113, -115, -117, -119 and -1211/13/2009
B en Inspection of Main Rotor Blade P/N 212-015-501-005, -111, -113, -115, -117, -119 and -1211/11/2011
C en Inspection of Main Rotor Blade P/N 212-015-501-005, -111, -113, -115, -117, -119 and -1211/11/2017
en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1038/24/2009
A en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1039/21/2009
en One Time Inspection of 205-030-856-157/-159 Elevators9/24/2009
A en One Time Inspection of 205-030-856-157/-159 Elevators1/18/2010
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL11/9/2009
A en Inspection of Tail Rotor Blade P/N 212-010-750-ALL12/8/2009
en Inspection of Transmission Oil Line P/N 70-061L000V360A for Correct Length1/11/2010
en Low Skid Gear Forward Crosstubes P/N 212-320-1034/28/2010
en Inspection and Replacement of Elevator and Directional Flight Control Bearings P/N MS27643-412/10/2010
en Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 212-010-103-1015/31/2011
en Onetime Inspection and Rework of Main Rotor Grip 204-011-121-009/-1211/18/2012
en One Time Inspection of Collective Lever P/N 212-010-403-1073/30/2012
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL2/4/2013
en Flight Controls - Hydraulic Servoactuator Undersized Thread Root Radius11/18/2013
en Introduction of Main Rotor Grip 204-011-121-009 Revised Ultrasonic Inspection and Daily Special Inspection Requirements7/23/2014
en Main Rotor Blade Bolt 204-011-151-001 Inspection, Rework and Replacement of5/21/2015
en Inspection of Tail Rotor Flight Control Tube 212-001-055-101 and Bearing DAS4-14A1-5129/8/2015
en Removal of Seat Belt Comfort Clips1/20/2016
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/3/2017
en Main Rotor Hub Inboard Strap Fitting 212-010-103-101 Serial Number Verification and Introduction of a 600-Hour Penalty7/21/2020
en Tailboom Left Hand Fin Spar Cap P/N 212-030-447-117, Inspection of4/15/2020
en Approved Tail Rotor Blades for Use on the Model 205B Helicopter8/6/2020
en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/5/2021
A en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/22/2021
en Tailboom Attachment Hardware, Inspection & Replacement of1/26/2022
A en Tailboom Attachment Hardware, Inspection & Replacement of2/23/2022
en Main Rotor Scissors & Sleeve Hub Assembly Collective 204-011-405-013 Identification12/20/2021
en Tension Rod Assembly P/N 205-030-249-009 or 205-030-249-013, Inspection of9/14/2023
en Drag Brace Assembly 204-011-140-001 / -005, Airworthiness Life and Magnetic Particle Inspection (MPI), Requirements8/24/2023
en Inboard Strap Fitting 212-010-103-101, Recall of10/20/2023
en Inspection of Cap Angle, P/N 205-030-207-005, Introduction, of4/22/2024
A en Method of Calculating Retirement Life on Subject Parts and Assignment of Retirement Lives3/21/1991
A en Drag Brace Assembly, P/N 204-011-140-001, Magnetic Particle Inspection8/24/2023
en Inspection of Tailrotor Drive Shaft10/5/1992
en Lower Spider P/N 412-040-785-101, Assignment of Retirement Life6/18/1993
en Inspection of Tail Rotor Yoke P/N 212-011-702-All, and Installation of Tail Rotor Flapping Stop/Yield Indicator P/N 212-011-713-1039/3/1996
A en Inspection of Fin Spar Cap 212-030-447-1019/21/1998
en Main Rotor Hub Retention Strap Fittings P/N 206-010-155-11 and -15 Also Pins P/N 206-010-123-36/25/1973
A en Introduction of Collective Lever Assembly 206-010-467-001, Modification and New Collective Lever Assembly /-1055/10/2000
A en Inspection of Pylon Support Link, P/N 206-031-5083/27/1973
B en Inspection of Tail Boom Skin Splice Rivets in Area from Station 300 to 341 on Left Hand Side10/16/1973
A en Part 1: Inspection of Vertical Fin Support Forgings, P/N's 206-031-417 and -418 for Cracks. Part 2: Replacement of Support Forgings, P/N's 206-031-417 and -4189/21/1973
E en Inspection of Horizontal Stabilizers P/N 206-020-119 (All Dash Numbers) and -123-3 and -4 Stabilizers9/18/1974
en Replacement of Cabin Roof Straps P/N 206- 031-200-23 and -24 with Straps P/N 206- 032-200-37 and -3811/12/1974
en Rescue Hoist, BL-16600 Series, Breeze Eastern Customer Alert Bulletin CAB-100-583/6/2001
A en Chip Detector Assembly, Tedeco B3188B5/7/2001
en Strap Fittings P/N 206-011-140-001, Tail Rotor Gearbox Input Pinions, P/N 206-040-405-101, Inspection and Recall of Specific Serial Number Part7/26/2001
en Rolls Royce Engine, Gearbox Assembly - Inspection of Helical Torquemeter Gearshaft Assembly10/11/2001
A en Inspection and Rework of Main Rotor Blades 206-010-200-All1/31/2003
A en Inspection and Rework of Main Rotor Hub Yoke P/N 206-010-101-1, -5, -9 & -138/22/1974
en Main Rotor Pitch Link Tubes P/N 206-010-3305/7/1973
B en Check/Inspection of Tail Rotor Blades 206-016-201-133/-1315/28/2004
C en Check/Inspection of Tail Rotor Blades 206-016-201-133/-1313/5/2005
en Check and Removal of Service of Tail Rotor Blade 206-016-201-1319/13/2004
en Inspection and Rework of Inside Door Handle Assembly P/N 206-031-620-1019/24/2004
en Inspection and Rework of Fuel Distribution System2/11/2005
A en Inspection and Rework of Fuel Distribution System7/12/2006
en Recall of Torque Indicator 206-075-739-1255/17/2005
en One-Time Inspection of Tail Rotor Trunnion Housing Seal 535642 Installation11/8/2005
en Misidentification of Float Inflation Valve Squib P/N 290229682/17/2006
A en Inspection of Vertical Fin Supports 206-031-417-003/-007 and 206-031-418-001/-0056/15/2006
en Aeronautical Accessories Inc. Flat Crew Window P/N 206-202-001 and 206-202-002, STC SH5773SW7/8/2006
en Removal from Service of Main Rotor Latch Bolts 206-010-169-001/-003 and 206-011-122-0037/25/2006
en Inspection of Upper Left Hand Tailboom Attachment Hardware9/7/2006
en Engine, Turbine Assembly - Power Turbine Outer Shaft10/12/2006
en Aeronautical Accessories, Inc. ASB No. AA-06107 for PC Safety Valve: Valve Stem Over Torque3/9/2007
en Cargo Hook Stress Corrosion Cracks3/23/2007
en Inspection of Disc Assembly 32721-13/28/2007
en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance5/21/2007
A en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance1/15/2008
B en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance5/5/2008
C en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance2/4/2009
D en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance7/9/2018
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/29/2010
en Engine, Fuel and Control - Power Turbine Governor Increased Reliability6/17/2008
en Misidentification of: 206-010-467-105 Collective Lever Assembly8/18/2008
en Inspection of Vertical Fin Assembly 206-020-113-2311/15/2009
en Main Rotor Pitch Horn Trunnion Bearing 206-011-105-001, One Time Check2/25/2009
en One Time Inspection of Lever Assembly P/N 206-001-401-111, 206-001-400-115 and 406-011-400-1113/10/2009
A en One Time Inspection of Lever Assembly P/N 206-001-401-111, 206-001-400-115 and 406-011-400-1114/7/2009
B en One Time Inspection of Lever Assembly P/N 206-001-401-111, 206-001-400-115 and 406-011-400-1116/19/2009
C en One Time Inspection of Lever Assembly P/N 206-001-401-111, 206-001-400-115 and 406-011-400-1118/24/2009
en One-Time Inspection of Staked Bearings4/7/2009
en Recall of Disc Assembly 101584-24/20/2009
A en Recall of Disc Assembly 101584-26/10/2009
en Change of Hydraulic System or Control Boost Switch-Off Check5/18/2009
en Engine, Fuel and Control - Honeywell Main Fuel Controls - Verification of Fuel Flow Calibration8/4/2009
en Aircraft Ground Receptacle, One Time Verification4/19/2010
en Recall of Control Box Assembly P/N 206-375-017-1015/2/2011
en Installation of Crew Seat Clip Retainers6/30/2011
en Inspection of Vertical Fin Supports P/N 206-031-417-ALL and P/N 206-031-418-ALL12/20/2012
A en Inspection of Vertical Fin Supports P/N 206-031-417-ALL and P/N 206-031-418-ALL2/4/2013
B en Inspection of Vertical Fin Supports P/N 206-031-417-ALL and P/N 206-031-418-ALL4/22/2013
C en Inspection of Vertical Fin Supports P/N 206-031-417-ALL and P/N 206-031-418-ALL6/9/2014
en Tension/Torsion Straps, 206-011-147-005 and 206-011-147-007, Reduction of Airworthiness Limitation9/30/2013
A en Tension/Torsion Straps, 206-011-147-005 and 206-011-147-007, Reduction of Airworthiness Limitation10/14/2013
en Engine, Compressor Assembly - Inspection of Front Support P/N M250-10051, M250-10052, M250-10059, M250-100609/3/2014
en Freewheel Assembly Oil Supply Blockage10/7/2014
A en Freewheel Assembly Oil Supply Blockage2/9/2016
en Removal of Seat Belt Comfort Clips1/11/2016
A en Removal of Seat Belt Comfort Clips2/5/2016
en Inspection of Air Conditioner Blower Motor Connector1/5/2016
A en Inspection of Air Conditioner Blower Motor Connector8/5/2016
B en Inspection of Air Conditioner Blower Motor Connector2/19/2019
C en Inspection of Air Conditioner Blower Motor Connector7/10/2019
en Air Conditioner Compressor Pulley Installation, Fastener Change8/5/2016
A en Air Conditioner Compressor Pulley Installation, Fastener Change10/13/2016
en Tail Rotor Driveshaft Disc Pack Coupling Nuts, Replacement of8/27/2019
en Tail Rotor Blade Root End, Inspection of4/2/2019
en Air Comm Corporation Air Conditioner Blower Motor Connector7/10/2019
en Segmented Tail Rotor Driveshafts 206-040-330-003/-101, 206-040-931-009/-011/-101/-103, 206-040-365-101/-105/-121/-123 with Bonded Adapters, Proof Load Test of7/21/2020
A en Segmented Tail Rotor Driveshafts 206-040-330-003/-101, 206-040-931-009/-011/-101/-103, 206-040-365-101/-105/-121/-123 with Bonded Adapters, Proof Load Test of8/21/2020
en Main Rotor Blades P/N 206-010-200-133 /-137 /-139 Grip Plates and Root End Doublers, Inspection of11/16/2020
en Main Rotor Pitch Link Assembly 206-010-360-001/-003, Inspection and Application of Torque Seal Lacquer2/8/2021
A en Pilot Cyclic Stick Assembly P/N 206-001-344-001/-101/-105, Inspection & Repair of3/27/2023
en Tail Rotor Segmented Driveshaft Assembly, One-Time Inspection of6/10/2024
en Swashplate Outer Ring & Collective Lever, Clearance Check of7/25/2024
en Airframe Fuel Filter Assembly 222-366-621-105 Drain Hole, Inspection of12/16/2024
A en Removal from Service of Rotor Brake Shock Mounted Disc Assembly 4000071 or 4000071-110/29/1974
A en Inspection of Tail Rotor Control Tube Assembly P/N 206-010-743-134/16/1975
en Installation Epoxy Resin Coated Flanged Bushings P/N 206-011-128-1 into Main Rotor Hub Pillow Blocks5/1/1975
B en Inspection of Main Rotor Hub Tension/Torsion Strap Assembly P/N 206-010-105-37/8/1976
A en Installation of Bearings P/N 206-040-339-912/2/1976
en Replacement of Tail Rotor Drive Shaft Clamp Type Bearing Hangers with Shims10/21/1977
en Inspection Interval of 206 Main Input Driveshaft Assembly, P/N 206-040-100-1310/24/1979
en Tail Rotor Blade, P/N 206-010-750-005 and -007, Inspection2/22/1980
B en Magnetic Particle Inspection Requirements and Replacement of Main Rotor Trunnion, P/N 206-010-104-3 and 206-011-113-00110/15/1980
B en Tail Rotor Blade, P/N 206-016-201-001/-103/-107, Check and Rivet Replacement6/21/1985
en Inspection of Cyclic Control Stick Assembly, P/N 206-001-344-1/-101, and 206-001-381-76/21/1985
en Main Rotor Mast, P/N 206-010-332-121, Return for Metallurgical Evaluation4/23/1987
en Installation of Emergency Float Bag Inflation Valve Restrictors - (Service Instruction 206-115)10/10/1989
en Installation of Fuel Valve Switch Guard5/31/1990
A en Sun Gear P/N 206-040-662-101, Recall of by Serial Number1/15/1991
en Part I: Inspection and Modification of Vertical Fin Supports P/N 206-031-417 and 206-031-418. Part II: Vertical Fin Assembly P/N 206-020-113-5, -7, -9, -107, Inspection for Gaps and Addition of Mounting Spacers, if Required6/28/1991
en Bracket, Bearing Support 206-030-407 and 206-030-433, One Time Inspection9/29/1992
B en Inspection of Swashplate Support Assembly 206-010-452-001/-005/-1094/4/1994
en Mislocation of Trunnion 206-011-113-103 Master Spline10/19/1993
B en Installation of Main Driveshaft Grease Lubricated Couplings 206-040-108 and 206-040-118, Over-Temperature Indicators9/6/1994
en Main Rotor Blade 206-010-200-133 Inspection and Rework11/17/1993
A en Engine Fuel Control Unit and Power Turbine Governor, Internal Spring Replacement10/10/2002
reiss en Addition of Friction Clamp, Adjustable Spring and Support to Tail Rotor Pedal Control5/23/1969
en Inspection of Model 206A Magnesium Tail Boom (P/N 206-031-004-1 and -3)8/22/1968
B en Replacement of Cyclic Control Bellcrank Support Assemblies, P/N 206-001-521-5 and -6, with Support Assemblies, P/N 206-001-544-5 and -69/29/1969
A en Establishment of Retirement Life of Hydraulic Cylinder Wire Drive, P/N 30000649, Installed in Hydraulic Cylinders, P/N 41103750, 41103750-2 and 41103650-005, Also Details of Exchange Program4/8/1970
en Inspection of Lever Assembly, P/N 206-001-339-1, For Evidence of Adequate Bearing Stare8/4/1969
C en Retirement of Transmission Spider, P/N 206-040-041-0014/8/1970
C en Inspection of 206-010-200-29, Main Rotor Blades12/11/1973
en Introduction of Collective Lever Assembly 206-010-467-001, Modification and New Collective Lever Assembly /-1053/10/2000
en Rolls-Royce 250-C30P Engine, Replacement of Compressor Scroll 23066737 and 2307284810/30/2000
en Rescue Hoist, BL-16600 Series, Breeze Eastern Customer Alert Bulletin CAB-100-583/6/2001
A en Chip Detector Assembly Tedeco B3188B and B40935/7/2001
en Recall of Tail Rotor Output Shaft 206-040-949-101 by Serial Number7/26/2001
en Rolls Royce Engine, Turbine Assembly - Third Stage Turbine Wheel with Limited Life9/17/2001
en One Time Inspection of Magnetic Brake P/N 204-001-376-00310/3/2001
A en Inspection of Engine-to-Transmission Driveshaft Assembly 206-340-300-1052/22/2006
en Rolls Royce Engine, Gearbox Assembly - Inspection of Helical Torquementer Gearshaft Assembly10/11/2001
en Inspection and Rework of Main Rotor Blades 206-015-001-All1/21/2003
en Rolls Royce 250-C30 Engine, Turbine Assembly - Inspection of 4th Stage Turbine Wheels (23066744)11/21/2003
B en Check/Inspection of Tail Rotor Blades 206-016-201-1315/28/2004
C en Check/Inspection of Tail Rotor Blades 206-016-201-1313/5/2005
en Engine, Turbine Assembly - Third Stage Turbine Wheel Replacement, Specific Serial Numbers5/17/2004
A en Inspection and Recall of Freewheel Aft Bearing Cap 406-040-509-10112/1/2004
en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance7/26/2004
en Check and Removal from Service of Tail Rotor Blade 206-016-201-1319/13/2004
A en Removal from Service of Low Level Detector Switch Unit P/N 206-063-613-00310/4/2004
en Recall of Torque Indicator, P/N 206-075-739-1235/17/2005
A en Introduction of New Transient Limit and Power Turbine RPM (N2) Steady State Operation Avoidance4/9/2007
en Rolls-Royce 250-C47B Engine Gearbox Assembly - Inspection and Rework of Gearbox Housing6/30/2005
A en Clevis Assembly - Hydraulic Servo Assembly, P/N 4100152011/10/2005
en One Time Inspection of Tail Rotor Trunnion Housing Seal 535642 Installation11/8/2005
en Misidentification of Float Inflation Valve Squib P/N 290229682/17/2006
en Aeronautical Accessories Inc. Flat Crew Window P/N 206-202-103 and 206-202-104, STC SH5773SW7/8/2006
en Inspection of Upper Left Hand Tailboom Attachment Hardware9/7/2006
en Inspection and Replacement of Horizontal Stabilizer 206-023-119-1679/12/2006
en Engine, Turbine Assembly - Power Turbine Outer Shaft10/12/2006
en Aeronautical Accessories, Inc. ASB No. AA-06107 for PC Safety Valve: Valve Stem Over Torque3/9/2007
en Cargo Hook Stress Corrosion Cracks3/23/2007
en Inspection of Disc Assembly 32721-13/28/2007
en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance5/21/2007
A en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance1/15/2008
B en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance3/3/2009
C en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance7/9/2018
en Freewheel Aft Seal 209-340-265-103, Installation Procedures Improvement of and Oil Dam Ring 406-040-547-103, One Time Verification7/19/2007
A en Freewheel Aft Seal 209-340-265-103, Installation Procedures Improvement of and Oil Dam Ring 406-040-547-103, One Time Verification6/6/2011
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/29/2010
en Inspection of Support Assembly P/N 206-033-501-003 and -0041/31/2008
en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance5/20/2008
A en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance3/3/2009
B en Introduction of Power Turbine RPM (N2) Steady State Operation Avoidance7/25/2018
en Engine, Fuel and Control - Power Turbine Governor Increased Reliability6/17/2008
A en Engine, Fuel and Control - Power Turbine Governor Increased Reliability1/6/2009
en Misidentification of: 206-010-467-105 Collective Lever Assembly8/18/2008
en Inspection of Vertical Fin Assembly 206-020-113-2311/15/2008
A en Inspection of Vertical Fin Assembly 206-020-113-2312/25/2009
en Main Rotor Pitch Horn Trunnion Bearing 206-011-105-011, One Time Check2/25/2009
en One Time Inspection of Lever Assembly P/N 206-001-401-111, 206-001-400-111 & 206-001-400-1153/10/2009
en One-Time Inspection of Staked Bearings4/7/2009
en Recall of Disc Assembly 101584-24/20/2009
A en Recall of Disc Assembly 101584-26/10/2009
en Airworthiness Inspection Limitation to Tailboom Left Upper Attachment Fitting P/N 206-032-409-0014/29/2009
A en Airworthiness Inspection Limitation to Tailboom Left Upper Attachment Fitting P/N 206-032-409-0018/31/2009
B en Airworthiness Inspection Limitation to Tailboom Left Upper Attachment Fitting P/N 206-032-409-0016/1/2011
en Check of Main Rotor Blade 206-015-001-107, /-109, /-111, /-115, /-117, /-119 and -1217/27/2009
A en Check of Main Rotor Blade 206-015-001-107, /-109, /-111, /-115, /-117, /-119 and -12111/13/2009
en Engine, Fuel and Control - Honeywell Main Fuel Controls - Verification of Fuel Flow Calibration8/4/2009
en Engine, Fuel and Control - Honeywell Main Fuel Controls - Verification of Fuel Flow Calibration8/4/2009
en Inspection of Hydraulic Servoactuator P/N 206-076-062-10311/3/2009
en One Time Inspection of Main Rotor Blades P/N 206-015-001-115 /-117, /-119 & -121 Spar Spacer11/13/2009
A en One Time Inspection of Main Rotor Blades P/N 206-015-001-115 /-117, /-119 & -121 Spar Spacer4/19/2012
en Aircraft Ground Receptacle, One Time Verification4/19/2010
en Inspection of Tail Rotor Blades 400-016-100-109 and -11310/26/2010
en One Time Verification of Hydraulic Pump Part Number10/28/2010
en Recall of Control Box Assembly P/N 206-375-017-1035/2/2011
en Installation of Crew Seat Clip Retainers6/30/2011
en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-1036/29/2011
A en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-1038/15/2011
B en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-1038/29/2011
en Inspection of Vertical Fin Supports P/N 206-031-417-ALL and P/N 206-031-418-ALL12/20/2012
A en Inspection of Vertical Fin Supports P/N 206-031-417-ALL and P/N 206-031-418-ALL2/4/2013
en Tension/Torsion Straps, 206-011-147-007, Reduction of Airworthiness Limitation9/30/2013
A en Tension/Torsion Straps, 206-011-147-007, Reduction of Airworthiness Limitation10/14/2013
en Engine - Spur Adapter Gearshaft, Retaining Ring5/21/2014
en Engine, Compressor Assembly - Inspection of Front Support P/N M250-10051, M250-10052, M250-10059, M250-100609/3/2014
en Freewheel Assembly Oil Supply Blockage10/7/2014
A en Freewheel Assembly Oil Supply Blockage2/9/2016
en Removal of Seat Belt Comfort Clips1/11/2016
A en Removal of Seat Belt Comfort Clips2/5/2016
en Inspection of Air Conditioner Blower Motor Connector1/5/2016
A en Inspection of Air Conditioner Blower Motor Connector8/5/2016
B en Inspection of Air Conditioner Blower Motor Connector2/19/2019
C en Inspection of Air Conditioner Blower Motor Connector7/10/2019
en Air Conditioner Compressor Pulley Installation, Fastener Change8/5/2016
A en Air Conditioner Compressor Pulley Installation, Fastener Change10/13/2016
en Inspection and Installation Change of Hydraulic Hose Assembly P/N 70-061H000T134A9/8/2016
en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-1040410/7/2016
A en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-1040412/8/2016
B en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-104041/16/2017
C en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-104043/3/2017
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/3/2017
en Tail Rotor Driveshaft Disc Pack Coupling Nuts, Replacement of8/27/2019
A en Tail Rotor Driveshaft Disc Pack Coupling Nuts, Replacement of8/29/2019
en Tail Rotor Blade Root End, Inspection of4/2/2019
en Air Comm Corporation Air Conditioner Blower Motor Connector7/10/2019
en Segmented Tail Rotor Driveshafts 206-040-369-001/-101, 206-040-365-001/-117/-125 with Bonded Adapters, Proof Load Test of7/21/2020
A en Segmented Tail Rotor Driveshafts 206-040-369-001/-101, 206-040-365-001/-117/-125 with Bonded Adapters, Proof Load Test of8/21/2020
B en Segmented Tail Rotor Driveshafts 206-040-369-001/-101, 206-040-365-001/-117/-125 with Bonded Adapters, Proof Load Test of10/20/2020
C en Segmented Tail Rotor Driveshafts 206-040-369-001/-101, 206-040-365-001/-117/-125 with Bonded Adapters, Proof Load Test of1/14/2021
en Main Rotor Blades P/N 206-015-001-115 /-117 /-119 Grip Plates and Root End Doublers, Inspection of11/16/2020
A en Main Rotor Pitch Link Assembly 206-010-360-005, Inspection and Application of Torque Seal Lacquer2/11/2021
A en Pilot Cyclic Stick Assembly P/N 206-001-344-001/-101/-105, Inspection & Repair of3/27/2023
en Horizontal Stabilizer & Cargo Hook Fittings - Self Locking Inserts, Inspection of1/25/2024
A en Horizontal Stabilizer & Cargo Hook Fittings - Self Locking Inserts, Inspection of3/27/2024
en Tail Rotor Segmented Driveshaft Assembly, One-Time Inspection of6/10/2024
en Swashplate Outer Ring & Collective Lever, Clearance Check of7/25/2024
en Airframe Fuel Filter Assembly 222-366-621-105 Drain Hole, Inspection of12/16/2024
en Replacement of Fuel Valve P/N 206-063-640-L with Fuel Valve P/N 206-063-640-34/2/1976
en Inspection of Horizontal Stabilizer, P/N 206-023-11910/23/1978
A en Inspection and Retirement of Tail Rotor Blade, P/N 206-010-750-005 and -0076/3/1980
B en Magnetic Particle Inspection Requirements and Replacement of Main Rotor Trunnion, P/N 206-011-120-00110/15/1980
C en Magnetic Particle Inspection Requirements and Replacement of Main Rotor Trunnion, P/N 206-011-120-0018/10/2001
en Modification of Engine Fuel Filter, Associated Fuel Hoses and Freewheeling Oil Hose6/17/1980
A en Modification of Engine Fuel Filter, Associated Fuel Hoses and Freewheeling Oil Hose
en Reduction of Service Life of Main Rotor Grips, P/N 206-011-132-009 (Selected Serial Numbers)7/29/1980
en Inspection of Horizontal Stabilizer Assembly, P/N 206-023-119, All Dash Numbers11/17/1980
en Replacement of Hose Assembly, Freewheeling Aft Oil Vent, P/N 124F001ABB0311SS2/24/1981
en Emergency Flotation Equipment Kit, P/N 206-706-067-1, -3, -5, -101, and 206-706-210-101 and -103, Inspection of the Valve Assembly, P/N 206-073-915-55/7/1981
en Modification or Retirement of Horizontal Stabilizer Assembly7/10/1981
A en Modification or Retirement of Horizontal Stabilizer Assembly10/23/1981
B en Tail Rotor Blade, P/N 206-016-201-001/-107, Check and Rivet Replacement6/21/1985
en Main Rotor Blade, P/N 206-015-001- 001/-103, Inboard Trim Tab, P/N 206-015-516-101, Removal, Blade Inspection and Repair2/26/1985
A en Main Rotor Blade, P/N 206-015-001- 001/-103, Inboard Trim Tab, P/N 206-015-516-101, Removal, Blade Inspection and Repair4/18/1985
en Inspection of Cyclic Control Stick Assembly, P/N 206-001-344-1, and -1016/21/1985
C en Periodic Inspection of, Modification of Tailbooms, P/N 206-033-004-3/-11/-103/-4510/23/1989
en Replacement of Fuel System Flow Switches, P/N 206-063-635-001, 206-064-601-001, -003, -101 and -1036/10/1988
A en Replacement of Fuel System Flow Switches, P/N 206-063-635-001, 206-064-601-001, -003, -101 and -1033/26/2013
en Installation of Emergency Float Bag Inflation Valve Restrictors (Service Instruction 206-2033)10/10/1989
A en Installation of Fuel Valve Switch Guard8/5/1991
A en Recall of by Serial Number Sungear P/N 206-040-662-1011/15/1991
en Bracket, Bearing Support 206-033-412-001/-003/-005/-007 and -009, One Time Inspection9/29/1992
A en Bracket, Bearing Support 206-033-412-001/-003/-005/-007 and -009, One Time Inspection2/27/1995
B en Inspection of Swashplate Support Assembly 206-010-452-001/-005 and -1094/4/1994
A en Mislocation of Trunnion 206-011-120-103 Master Spline11/9/1993
en Main Rotor Blade 206-015-001-107, Inspection and Rework11/17/1993
A en Turbine Outlet Temperature Indicator; Replacement of Kratos Indicators P/N 124.444-6 and 124.444-20 with Indicators 206-075-680-105 or 206-375-006-1017/11/1994
en Assignment of Retirement Index Number (RIN) to Trunnion 206-011-120-103, and Mast 206-040-535-001/-005/-101/-10510/14/1994
A en Assignment of Retirement Index Number (RIN) to Trunnion 206-011-120-103, and Mast 206-040-535-001/-005/-101/-10510/14/1994
B en Assignment of Retirement Index Number (RIN) to Trunnion 206-011-120-103, and Mast 206-040-535-001/-005/-101/-1058/10/2001
B en Inspection of Tail Rotor Yoke Assembly P/N 406-012-102-107 and Installation of Stop P/N 206-011-752-1017/24/1998
en Modification of Collective Idler Link 206-010-446 and Collective Lever 206-010-447, Airworthiness Limitations Schedule5/6/1998
en Replacement of Hydraulic Relief Valve P/N 206-076-036-1017/24/1998
A en Engine Fuel Control Unit and Power Turbine Governor, Internal Spring Replacement10/10/2002
en Inspection of Tailboom 206-033-004-003, /-011, /-103, /-045, /-145, /-143, /-175 and /-17711/25/1998
B en Inspection of Tailboom 206-033-004-003, /-011, /-103, /-045, /-145, /-143, /-175 and /-17712/6/2000
F en Inspection and Modification of Tailbooms 206-033-004-All4/14/2001
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS2764312/19/2007
en Scissor and Sleeve Assembly, P/N 204-011-401-0216/18/2008
en Ultrasonic Inspection of Main Rotor Grips 204-011-121-0099/10/2008
A en Inspection of Main Rotor Blade P/N 210-015-001-1011/12/2009
B en Inspection of Main Rotor Blade P/N 210-015-001-1011/10/2010
C en Inspection of Main Rotor Blade P/N 210-015-001-1011/17/2017
D en Inspection of Main Rotor Blade P/N 210-015-001-1013/7/2018
E en Inspection of Main Rotor Blade P/N 210-015-001-10110/18/2018
en High Landing Gear Forward Crosstubes P/N 212-321-10310/29/2009
en One Time Inspection of 205-030-856-157/-159 Elevators9/17/2009
A en Inspection of Tail Rotor Blade P/N 210-010-100-10112/8/2009
en Inspection and Replacement of Elevator and Directional Flight Control Bearings P/N MS27643-412/10/2010
en Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 212-010-103-1015/31/2011
en Flight Controls - Hydraulic Servoactuator Undersized Thread Root Radius11/19/2013
en Inspection, Rework and Replacement of Main Rotor Blade Bolt 204-011-151-0015/21/2015
en 210 Stabilizer Bar Damper Lever and Damper Assembly, One Time Inspection3/31/2016
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/21/2017
en Tailboom Left Hand Fin Spar Cap P/N 212-030-447-117, Inspection of4/15/2020
A en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/22/2021
en Tailboom Attachment Hardware, Inspection & Replacement of1/27/2022
A en Tailboom Attachment Hardware, Inspection & Replacement of2/23/2022
en Main Rotor Scissors & Sleeve Hub Assembly Collective 204-011-405-013 Identification1/10/2022
en Inboard Strap Fitting 212-010-103-101, Recall of10/20/2023
en Main Beam Cap Angle, P/N: 205-030-163-093, Inspection of6/27/2024
B en Main Rotor Mast, P/N 204-011-450-007/-105/-113/-119, Inspection and Retirement Index Number (RIN) Life Reduction8/4/2000
A en Installation and One Time Use of Tail Rotor Counterweight Bellcrank Retention Nut MS14145L6 and MS17826-69/13/2000
A en Cargo Hook, Onboard Systems P/N 528-002-009/9/2002
en Installation and Replacement of Main Hydraulic Servo Actuator Rod End Lock Washer10/19/2000
A en Inspection of Fin Spar Cap P/N 212-030-125-001, P/N 212-030-447-001/1012/15/2001
A en Tail Rotor Blade P/N 212-020-750-009 through -129, Tip Block Retention Modification12/20/2000
D en Tail Rotor Blade P/N 212-020-750-009 through -129, Tip Block Retention Modification3/18/2005
B en Inspection, Repair and Modification of Synchronized Elevators, P/N 205-030-856-49 and -5112/17/1974
en One Time Inspection of Magnetic Brake P/N 204-001-376-0031/19/2001
en Chip Detector Assembly, Tedeco B37033/30/2001
en Clutch Assembly P/N X134296, Assignment of Retirement Life4/19/2001
en Pillow Block P/N 204-011-108-113. Tube Assembly, P/N 212-010-404-005, Inspection and Recall of Specific Serial Number Part7/26/2001
A en Ultrasonic Inspection of Main Rotor Grips 204-011-121-009 and -12110/30/2002
en 1200 Hour Special Inspection Requirements for Main Rotor Hub Pins P/N 204-012-104-003/0056/20/2002
en Inspection and Rework of Tail Rotor Blade Assemblies P/N 212-010-750-113/-11511/22/2002
en Introduction of Pratt Whitney Canada Service Information Letter (PT6T-040) Fuel Flow Transducer Kit Removal2/17/2004
en Replacement of Tail Rotor Pitch Horn Assembly P/N 212-011-708-10512/3/2004
en Inspection of Tail Rotor Hub Assembly P/N 212-010-7018/20/1973
en Crosshead P/N 212-010-775-001, Inspection and Recall of Specific Serial Number Part2/18/2005
en Inspection and Rework of Tail Rotor Blade P/N 212-010-750-009 through -1294/30/2005
en Misidentification of Float Inflation Valve Squib P/N 290229682/17/2006
en Inspection of Engine, P3 Filter and Pneumatic System3/26/2007
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/22/2010
en Inspection/Replacement of AGB Coupling - Shaft Bearing11/1/2007
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643-411/27/2007
en Flight Controls - Hydraulic Servo Actuator Recall for Undersized Radius6/17/2008
en Scissor and Sleeve Assembly, P/N 204-011-401-021. Seal P/N 401-010-428-001 Replacement6/24/2008
en Inspection of Main Rotor Blade P/N 212-015-501-005, -111, -113, -115, -117, -119 and -12112/19/2008
A en Inspection of Main Rotor Blade P/N 212-015-501-005, -111, -113, -115, -117, -119 and -1211/13/2009
B en Inspection of Main Rotor Blade P/N 212-015-501-005, -111, -113, -115, -117, -119 and -1211/11/2011
C en Inspection of Main Rotor Blade P/N 212-015-501-005, -111, -113, -115, -117, -119 and -1211/11/2017
en Inspection/Change of Restraint System Assembly with Inertia Reel and Manual Lock Handle2/17/2009
en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1038/24/2009
A en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1039/21/2009
en One Time Inspection of 205-030-856-157/-159 Elevators9/24/2009
A en One Time Inspection of 205-030-856-157/-159 Elevators1/18/2010
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL11/9/2009
A en Inspection of Tail Rotor Blade P/N 212-010-750-ALL12/8/2009
en Inspection of Transmission Oil Line P/N 70-061L000V360A for Correct Length1/11/2010
en Crimping of Gearbox Cowl Door Hinges1/11/2010
A en Crimping of Gearbox Cowl Door Hinges1/25/2010
en Inspection for Gap Between the Intake Fairing Assembly and the Lower Forward Firewall Horizontal Flange6/16/2010
A en Inspection for Gap Between the Intake Fairing Assembly and the Lower Forward Firewall Horizontal Flange8/18/2010
en Low Skid Gear Forward Crosstubes P/N 212-320-1034/28/2010
en Inspection and Replacement of Elevator and Directional Flight Control Bearings P/N MS27643-412/10/2010
en High Forward Crosstubes, P/N 205-050-403-031, 412-050-046-101, Mandatory Inspection6/23/2010
en Main Rotor Hub Inboard Strap Fitting 212-010-103-007, Removal from Service11/11/2010
A en Main Rotor Hub Inboard Strap Fitting 212-010-103-007, Removal from Service11/18/2010
en Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 212-010-103-005/-00711/24/2010
A en Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 212-010-103-005/-0073/21/2011
B en Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 212-010-103-005/-0075/31/2011
en Replacement of Emergency Floatation System Tube Assy 412-073-820-10110/10/2011
A en Replacement of Emergency Floatation System Tube Assy 412-073-820-1017/28/2016
B en Replacement of Emergency Floatation System Tube Assy 412-073-820-10110/5/2016
C en Replacement of Emergency Floatation System Tube Assy 412-073-820-10112/22/2016
en Onetime Inspection and Rework of Main Rotor Grip 204-011-121-009/-1211/18/2012
en One Time Inspection of Collective Lever P/N 212-010-403-0053/30/2012
en Engine Fire Extinguisher Bottle Stem Inspection12/18/2012
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL2/4/2013
en Serial Number Verification and Replacement of Transmission and Gearbox Oil Cooler 209-062-501-0058/22/2013
en Flight Controls - Hydraulic Servoactuator Undersized Thread Root Radius11/18/2013
en Introduction of Main Rotor Grip 204-011-121-009 Revised Ultrasonic Inspection and Daily Special Inspection Requirements7/23/2014
en Main Rotor Drive, Engine-to-Transmission Drive Shaft Retaining Nuts Inspection/Replacement9/2/2014
A en Main Rotor Drive, Engine-to-Transmission Drive Shaft Retaining Nuts Inspection/Replacement12/13/2017
en Inspection, Rework and Replacement of Main Rotor Blade Bolt 204-011-151-0015/21/2015
en Inspection and Replacement of Engine Oil Check Valve 209-062-520-0019/4/2015
A en Inspection and Replacement of Engine Oil Check Valve 209-062-520-00110/6/2017
en Inspection of Tail Rotor Flight Control Tube 212-001-055-101 and Bearing DAS4-14A1-5129/8/2015
en Inspection and Replacement of Fuel Check Valve 209-062-607-0019/15/2015
A en Inspection and Replacement of Fuel Check Valve 209-062-607-00110/6/2017
en Removal of Seat Belt Comfort Clips1/20/2016
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/3/2017
en Verification of Crew Door Jettison Mechanism9/11/2017
en Fuel Fitting P/N 50-040-1 and 50-040-3, Verification of9/13/2018
en Hanger Bearing Support Brace Assembly 205-030-831-015 Installation, Verification of9/25/2018
en Reduction Gearbox Oil Tube Assembly P/N 212-061-533-001, Inspection of9/24/2019
en Tailboom Left Hand Fin Spar Cap P/N 212-030-447-117, Inspection of4/15/2020
en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of11/20/2020
A en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of12/17/2020
B en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of4/6/2021
en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of11/20/2020
A en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of12/17/2020
B en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of4/6/2021
en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/5/2021
A en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/22/2021
en Tailboom Attachment Hardware, Inspection & Replacement of1/26/2022
A en Tailboom Attachment Hardware, Inspection & Replacement of2/23/2022
en Main Rotor Scissors & Sleeve Hub Assembly Collective 204-011-405-013 Identification12/20/2021
en Tension Rod Assembly P/N 212-030-170-007, Inspection of9/14/2023
en Inspection of Cap Angle, P/N 212-030-191-001, Introduction, of4/22/2024
en Inspection of Transmission to Engine Drive Shaft Adapter Nut P/N 212-040-631-12/19/1975
C en Inspection, Sealing and Refinishing of Main Rotor Blade4/25/1979
A en Replacement of Emergency Exit Decals, and Escape Release Handle8/22/1975
en Assignment of 500 Hour Service Life to Float Gear Cross Tubes P/N 205-050-114-1, -3, -5, -7 and -9, and Cross Tube Assemblies P/N 205-706-050-5 and -9. Removal from Service of Damper Assemblies P/N 205-050-127-3 and -5 (Manufactured by FriASBy)3/5/1976
en Inspection and Adjustment of Latch System, Passenger Door Emergency Escape Panels9/29/1976
en Model 212 Main Rotor Blades P/N 204-012-001-23 and -291/28/1977
en Tail Rotor Pitch Change Horn P/N 212-010-716 All Dash Numbers3/11/1977
A en Model 212 Main Rotor Blades P/N 204-012-001-23 and -2911/15/1978
en Adding Additional Inspection Holes in the L/H and R/H Passenger Door Assemblies3/23/1977
en Modification of Main Rotor Blade Inspection System Kit P/N 212-704-116-14/28/1977
en Replacement of Spacers Attaching the Emergency Escape Release Handle Covers6/6/1977
en Assignment of 1000 Hour Service Life to Aft Cross Tube Assemblies P/N 205-050-400-7, -29, -35 and -70512/14/1977
en Removal of Rotor Brake Quill Assembly, P/N 205-040-300-1. Inspection of Spiral Bevel Gear, P/N 204-040-701-37/28/1978
A en Emergency Float Bag Assemblies P/N's 212-050-207-1, -2, -3, and -4 or P/N 212-030-411-1, -2, -3 and -4, Installation of Girt Reinforcements on Inboard Corners of Girt Assemblies, in Accordance with BF Goodrich's Service Bulletin No. 01 and/or Air Cruisers Service Bulletin No. 120-78-19/12/1978
en Inspection of Spiral Bevel Gear P/N 204-040-701-3 and -101 and Installation of Rotor Brake Quill P/N 204-040-300-111/17/1978
en Reduction of Retirement Life of Tension/Torsion Straps, P/N 204-012-122-001/-0054/22/1980
A en Float Landing Gear Crosstube, P/N's 205-050-114-001, -003, -005, -007, -009, -011, -013, and 205-706-050- 005, -009, and -013, Mandatory Retirement and Mandatory Relocation of Forward Friction Damper
en Reduction of Swashplate Support Assembly, P/N 204-011-404-017, Retirement Life. Replacement of Swashplate Support Assembly, P/N 204-011-404-0173/18/1981
A en Reduction of Swashplate Support Assembly, P/N 204-011-404-017, Retirement Life. Replacement of Swashplate Support Assembly, P/N 204-011-404-0174/10/1981
A en Retirement Life of Main Rotor Yoke, P/N 204-011-102-(All Dash Numbers)3/31/1989
A en Inspection of Tail Rotor Trunnion Bearing Housing, P/N 212-011-716-0017/23/1986
A en Main Rotor Mast, P/N 204-011-450-Series and Main Rotor Trunnion P/N 204-011-105-001, Assignment of Retirement Life8/21/1987
en Drag Brace Assembly, P/N 204-011-140-003, -005, Magnetic Particle Inspection2/5/1990
A en Inspection of Main Rotor Yoke P/N 204-011-102-(All Dash Numbers)8/31/1990
A en One Time Use of Main Rotor Pillow Block Attachment Bolt 204-011-171-003, Washer 140-007-33S28-3 and Nut EB08010/11/1990
B en Method of Calculating Retirement Life on Subject Parts and Assignment of Retirement Life3/11/1992
en Engine-to-Driveshaft Coupling Adapter Installation Procedures6/24/1991
en Swashplate Support P/N 204-011-404-12512/13/1991
en Main Rotor Yoke P/N204-011-102 All Dash Numbers, Removal from Service10/23/1992
en Lower Spider P/N 412-040-785-101, Assignment of Retirement Life6/18/1993
A en Introduction of New Scheduled Inspection, Overhaul and Conditional Inspection Requirements: Main Rotor Grip P/N 204-011-121-009, -121 and P/N Grips with Modified Suffix Characters3/15/1995
en Main Rotor Mast 204-011-450-007/-105/-113/-119, and Main Rotor Trunnion 204-011-105-001/-103, Change of Retirement Life and Method of Determination6/30/1995
A en Tail Rotor Yoke Assemblies P/N 212-010-704-all and P/N 212-010-738-001: Inspection of and Trunnion Assemblies P/N 205-012-716-001 and P/N 212-010-703-001: Removal from Service5/18/1998
en Inspection of Tail Rotor Yoke P/N 212-011-702-All, and Installation of Tail Rotor Flapping Stop/Yield Indicator P/N 212-011-713-1039/3/1996
en 214-010-185-107 Strap Fitting Assembly, Establishment of 2500 Hour Airworthiness Life6/2/2000
en Honeywell Service Bulletin T5508D-0042: Engine-Accessory Drive Gearbox One Time Inspection - Accessory Gearbox Cover Assembly P/N 2-080-010-15/-18/-20/-23/-248/21/2000
A en P/N 214-015-001-All (Metal) Main Rotor Blade Lower Skin Inspection9/14/2000
en Honeywell Service Bulletin T5508D-0043: Engine - Accessory Drive Gearbox - One Time Replacement - Accessory Drive Spur Gear P/N 2-080-016-02/-042/15/2002
en Tail Rotor Blade, P/N 214-015-750-005, -109 and -113, Tip Closure Inspection3/12/2003
en Honeywell Service Bulletin T5508D-0046: Engine - Accessory Drive Carrier Assembly - Removal from Service of Accessory Drive Inner Bevel Gear P/N 2-070-024-0110/10/2005
en Tail Rotor Driveshaft Hanger Assembly Bearing, P/N 214-040-606-101, One Time Inspection8/11/2006
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643-410/18/2007
en P/N 214-030-606-005 Pylon Support Spindle Assembly. Establishment of a Retirement Life and Method of Determination11/11/2008
A en P/N 214-030-606-005 Pylon Support Spindle Assembly. Establishment of a Retirement Life and Method of Determination11/20/2008
B en P/N 214-030-606-005 Pylon Support Spindle Assembly. Establishment of a Retirement Life and Method of Determination2/2/2009
C en P/N 214-030-606-005 Pylon Support Spindle Assembly. Establishment of a Retirement Life and Method of Determination4/14/2009
en Inspection and Replacement of Elevator and Directional Flight Control Bearings, MS27643-412/10/2010
en Engine - Fuel System - Incorrectly Maintained Fuel Controls1/6/2012
en Main Rotor Hub Assembly Spindle Assembly, P/N 214-010-103, Mandatory Inspection and Overhaul Requirements5/25/2012
en Inspection and Replacement of P/N 214-040-606-005/-101 Tail Rotor Hanger Bearing1/23/2013
A en Inspection and Replacement of P/N 214-040-606-005/-101 Tail Rotor Hanger Bearing3/25/2013
en Tension/Torsion Strap Assembly, P/N 214-010-179-003, Airworthiness Life Penalty for Specific Serial Numbered Assemblies12/12/2012
en Removal of Seat Belt Comfort Clips1/11/2016
en Main Driveshaft Outer Coupling 214-040- 659-005, Inspection of1/30/2018
en Inspection and Adjustment of Latch System, Passenger Door Emergency Escape Panels9/29/1976
en Rework of Main Beam Vertical Splice Fitting, P/N 214-030-463-111/1/1976
en Replacement of Spacers and Screws attaching the Emergency Escape Release Handle Covers2/23/1977
en Adding Inspection Holes in the Passenger Door Assemblies3/28/1977
A en Inspection of Tail Boom Vertical Fin Forward Spar Area11/30/1977
en Modification of Tailboom Vertical Fin1/27/1978
en Installation of Freewheeling Clutch Assembly, P/N 214-040-021-1038/22/1980
en Inspection of Main Rotor Spindle Bolt, P/N EWB26-10H90. Reduction of Main Rotor Spindle Bolt, P/N EWB26-10H90, Retirement Life3/25/1981
en Inspection of Yoke, Tail Rotor, P/N 214-010-702-001, -105 and -1079/14/1981
en Rewiring of Battery Temperature Sensor9/26/1983
en Inspection of Collective Sleeve, P/N 214-010-411-001, with Serial Number A-19 Prefix3/12/1984
en Inspection of Drag Brace Assembly, P/N 214-010-113-001/-0039/3/1985
en Inspection of Drag Brace Assembly P/N 214-010-113-001/-0039/3/1985
en Reinspection of Collective Sleeve, P/N 214-010-411-001/-003 with Serial Number A-19 Prefix and A-1 thru A-1011/7/1985
en Replacement of Scissors and Sleeve Locking Plates, P/N 214-010-231-101 and P/N 214-010-232-10110/8/1986
A en Main Rotor Yoke, P/N 214-010-105-001, Reduction of Retirement Life, from 5000 Hours to 3750 Hours, the Addition of a 1200 Hour Inspection, and a New Airspeed Versus Altitude Restriction9/10/1987
en Carrier Assembly, P/N 214-040-077-007 and -101, Increase in Retirement Life, a Method of Calculating Retirement Life and Alternate Method of Compliance8/1/1991
en Upper Planetary Carrier, P/N 214-040-077-007 and -101, Change in Retirement Life and Method of Determination11/7/1994
en Spider, P/N 214-040-080-001, and -101, Change in Retirement Life and Method of Determination11/7/1994
en Pillow Block Bearing Bolts, P/N 20-057-12-48D, Change in Retirement Life and Method of Determination11/7/1994
en Trunnion, P/N 214-010-230-101, Change in Retirement Life and Establishment of a Method of Determination11/7/1994
A en P/N 214-015-001-All (Metal) Main Rotor Blade Spar Corrosion10/23/1995
en Tail Rotor Yoke Assembly P/N 214-011-802-105 and -111 Inspection and Installation of Tail Rotor Flapping Stop P/N 214-011-809-1098/26/1996
en Self-Locking Barrel Nut, P/N NAS577B-10A One Time Inspection7/17/1997
en Main Rotor Strap Pin, P/N 214-010-117-001, Recall7/5/1999
en Tail Rotor Crosshead P/N 214-010-806-105, One Time Inspection7/12/2000
en One Time Inspection of Magnetic Brake P/N 204-001-376-1031/19/2001
A en Tail Rotor Driveshaft Hanger Assembly Bearing, P/N 214-040-606-101, One Time Inspection9/14/2006
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643-410/18/2007
en P/N 214-030-606-103 Pylon Support Spindle Assembly, Reduction of Retirement Life and Establishment of an Alternate RIN Limit11/11/2008
A en P/N 214-030-606-103 Pylon Support Spindle Assembly, Reduction of Retirement Life and Establishment of an Alternate RIN Limit11/20/2008
B en P/N 214-030-606-103 Pylon Support Spindle Assembly, Reduction of Retirement Life and Establishment of an Alternate RIN Limit4/14/2009
en Inspection/Change of Restraint System Assembly with Inertia Reel and Manual Lock Handle2/11/2009
en Inspection and Replacement of Elevator and Directional Flight Control Bearings, P/N MS27643-412/10/2010
en Main Rotor Hub Assembly Spindle Assembly, P/N 214-010-103, Mandatory Revision of Inspection and Overhaul Requirements5/25/2012
en Inspection and Replacement of P/N 214-040-606-005/-101 Tail Rotor Hanger Bearing1/23/2013
A en Inspection and Replacement of P/N 214-040-606-005/-101 Tail Rotor Hanger Bearing3/25/2013
en Tension/Torsion Strap Assembly, P/N 214-010-179-003, Airworthiness Life Penalty for Specific Serial Numbered Assemblies12/12/2013
en Removal of Seat Belt Comfort Clips1/20/2016
en Spindle to Yoke Bolt P/N 214-010-262-103, Serial Numbers, Inspection of4/4/2018
en Spindle to Yoke Bolt P/N 214-010-262-103, Serial Numbers, Inspection of4/4/2018
A en Spindle to Yoke Bolt P/N 214-010-262-103, Serial Numbers, Inspection of4/17/2019
A en Spindle to Yoke Bolt P/N 214-010-262-103, Serial Numbers, Inspection of4/17/2019
en Inspection and Modification of Upper Left Hand Aft Fuselage Tail Boom Attach Longeron, P/N 214-031-431-10110/25/1982
en Inspection of Collective Sleeve, P/N 214-010-411-001, with Serial Number A-19 Prefix3/12/1984
en Installation of Emergency Flotation Reservoir, P/N 222-325-021-101, Decal (Warning) P/N 31-023-8B and Decal (Caution) P/N 31-023-9B8/30/1984
en Reduction of Retirement Life Main Rotor Spindle, P/N 214-010-103-0038/30/1984
en Inspection of Drag Brace Assembly, P/N 214-010-113-001/-0039/3/1985
en Inspection Interval of Locking Plate, P/N 214-010-232-101 for Condition and Proper Installation and Torque Check of Collective Hub Nut, P/N 214-010-417-0016/11/1986
A en Scissors and Sleeve Locking Plates, P/N 214-010-231-101 and P/N 214-010-232-10111/3/1986
en Inspection of Tail Rotor Intermediate Gearbox P/N 214-040-009-1019/17/1987
A en Replacement of Drag Brace Assembly, P/N 214-010-113-1052/20/1989
A en Emergency Float System Pneumatic Hose Assembly Replacement and Calendar Live Assignment10/8/1999
en Main Rotor Mast, P/N 214-040-090-109 and -121, Change of Retirement Life and Method of Determination11/7/1994
en Pillow Block Bearing Bolts, P/N 20-057-12-48D, -50D, Change of Retirement Life and Method of Determination11/7/1994
en Tailboom Assembly P/N 214-031-003-111, Inspection and Modification7/24/1995
en Tail Rotor Yoke Assembly P/N 214-011-802-105 and -111 Inspection and Installation of Tail Rotor Flapping Stop P/N 214-011-809-1098/26/1996
en Self-Locking Barrel Nut, P/N NAS577B-10A One Time Inspection7/17/1997
en Main Rotor Strap Pin, P/N 214-010-117-001, Recall7/5/1999
en Inspection of Hydraulic Actuator Support P/N 222-040-125-0015/19/2000
en One Time Inspection of Magnetic Brake P/N 204-001-376-105 & -1071/19/2001
en Rescue Hoist, BI-16600 Series, Breeze Eastern Customer Alert Bulletin CAB-100-581/16/2001
en Upper Fuel Enclosure, Right Side Addition of Drain Provision2/7/2001
en Inspection of Rotation Ring Assembly P/N 222-010-403-005-113 and -1175/18/2001
A en Inspection of Rotation Ring Assembly P/N 222-010-403-005-113 and -11710/26/2005
en Replacement of Main Rotor Pendulum Weight Support P/N 222-011-114-1035/18/2001
en Rework of Main Rotor Pendulum Weight Support P/N 222-011-114-101 and -1033/28/2002
en Inspection of Main Rotor Hub Assemblies P/N 222-011-101-103/-105/-107/-109 and P/N 222-012-101-103/-1074/1/2002
A en Inspection of Main Rotor Hub Assemblies P/N 222-011-101-103/-105/-107/-109 and P/N 222-012-101-103/-1073/3/2003
en Replacement of Fuel System Check and Relief Valve P/N 222-366-687-1014/9/2002
en Honeywell LTS Engine, Inspection of Fuel Pump International Drive Splines6/26/2003
en Honeywell LTS 101 Engine, Replacement of Fuel System Power Turbine Governor Spool Bearing P/N 25239736/26/2003
en Inspection of Main Rotor Hub P/N 222-011-101-All and 222-012-101-all9/23/2003
en Honeywell LTS 101 Engine, Removal and Replacement of Fuel Control Spool Bearing P/N 2523973 Rev. M6/8/2004
C en Tail Rotor Counterweight Bellcrank P/N 222-012-727-003, Removal from Service2/16/2006
en Inspection of Tail Rotor Blade P/N 222-016-001-123, 127, -131 and -1359/27/2004
A en Inspection of Tail Rotor Blade P/N 222-016-001-123, 127, -131 and -1359/28/2006
B en Inspection of Tail Rotor Blade P/N 222-016-001-123, 127, -131 and -1353/31/2008
B en Inspection and Recall of Tail Rotor Bellcrank P/N 222-012-727-1053/15/2006
en Misidentification of Float Inflation Valve Squib P/N 290229682/17/2006
en Engine - Gearbox - Removal and Replacement of Locking Cup P/N 4-082-094-0111/21/2006
en Tail Rotor Pitch Change Mechanism, Revised Rigging Procedures1/9/2007
en Inspection of Disc Assembly 36300-1 and 37855-13/28/2007
A en Inspection of Tail Rotor Blade Assembly9/13/2007
C en Inspection of Tail Rotor Blade Assembly9/20/2007
D en Inspection of Tail Rotor Blade Assembly11/29/2010
en One-Time Inspection of Staked Bearings4/7/2009
en Main Rotor Pendulum Weight Support P/N 222-011-114-101 and -103 Removal from Service11/10/2009
en Inspection of Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT8/18/2010
A en Inspection of Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT8/30/2011
en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/10/2010
A en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/15/2010
en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM12/9/2011
A en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM6/22/2012
B en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM11/4/2021
C en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM2/24/2022
en Removal of Seat Belt Comfort Clips1/11/2016
en Replacement of Swashplate Rotating Ring Assembly Pins5/13/2016
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-105 and 204-001-376-1073/3/2017
A en Inspection, Sealing and Protection of Main Rotor Blade, P/N 222-015-500-101, Center Spar Doubler8/24/1982
A en Main Rotor Trunnion, P/N 222-010-154-101, and Mast Assembly, Torque Meter, P/N 222-040-002-103 Mandatory Life Reduction2/28/1983
en Inspection of Walking Beam Assembly, P/N 222-010-4151/26/1983
en Airworthiness Life (Hours) Assignment of Nodal Beam Left Side Aft Support Fitting, P/N 222-031-520-1054/5/1983
en Inspection, Repair and Modification of Tailboom, P/N 222-035-150-1033/21/1985
en Directional Hydraulic Actuator, P/N 222-382-002-101 and Main Rotor Control Dual Servo actuator, P/N 222- 382-001-101, Inspection of Control Linkage Rivets8/13/1985
A en Rework of Flapping Bearing, P/N 222-310-114-003/-1051/14/1987
en Inspection of Main Rotor Yoke, P/N 222-011-102-1011/14/1988
en Inspection and Replacement of Stabilizer Assembly, P/N 222-035-250-101, -103, -1053/20/1989
en Inspection and Replacement of Tail Rotor Boost Cylinder Support Bracket, P/N 222-031-471-0018/24/1989
en Engine, Lycoming LTS 101-650/-750 Series Power Turbine Speed Restriction for Cast Turbine Wheels12/21/1990
en Flapping Bearing, 105/-107/-109 P/N 222-310-114-003/-107/-10912/16/1992
en Torque Check and Inspection of Main Rotor Hub P/N 222-011-101-all and 222-012-101-all, Grip and Flapping Bearing Retaining Bolts4/23/1998
A en Vertical Fin Assembly Installation, Inspection6/9/1998
en Inspection of Main Rotor Hub P/N 222-011-101-All and 222-012-101-W10/12/1998
en Inspection of Swashplate Assembly Drive Pins P/N 222-010-455-0032/15/1999
en Inspection of Tail Rotor Pitch Change Bearings; and Replacement of Hardware12/16/1999
en Inspection of Hydraulic Actuator Support P/N 222-040-125-0015/19/2000
en One Time Inspection of Magnetic Brake P/N 204-001-376-105 & -1071/19/2001
en Rescue Hoist, BL-16600 Series, Breeze Eastern Customer Alert Bulletin CAB-100-581/16/2001
en Upper Fuel Enclosure, Right Side, Addition of Drain Provision2/7/2001
en Inspection of Rotating Ring Assembly P/N 222-010-403-005, -113 and -1175/18/2001
A en Inspection of Rotating Ring Assembly P/N 222-010-403-005, -113 and -11710/26/2005
en Replacement of Main Rotor Pendulum Weight Support P/N 222-011-114-1035/18/2001
en Rework of Main Rotor Pendulum Weight Support P/N 222-011-114-101 and -1033/28/2002
en Inspection of Main Rotor Hub Assemblies P/N 222-011-101-105/-107/-109 and P/N 222-012-101-103/-1074/1/2002
A en Inspection of Main Rotor Hub Assemblies P/N 222-011-101-105/-107/-109 and P/N 222-012-101-103/-1073/3/2003
en Replacement of Fuel System Check and Relief Valve P/N 222-366-687-1014/9/2002
en Honeywell LTS 101 Engine, Inspection of Fuel Pump International Drive Splines6/26/2003
en Honeywell LTS 101 Engine, Replacement of Fuel System Power Turbine Governor Spool Bearing P/N 25239736/26/2003
en Inspection of Main Rotor Hub P/N 222-011-101-All and 222-012-101-All9/23/2003
en Honeywell LTS 101 Engine, Removal and Replacement of Fuel Control Spool Bearing P/N 2523973 Rev. M6/8/2004
C en Tail Rotor Counterweight Bellcrank P/N 222-012-727-003, Removal from Service2/16/2006
en Inspection of Tail Rotor Blade P/N 222-016-001-123, -123M, -131 and -139M8/27/2004
A en Inspection of Tail Rotor Blade P/N 222-016-001-123, -123M, -131 and -139M8/28/2006
B en Inspection of Tail Rotor Blade P/N 222-016-001-123, -123M, -131 and -139M3/31/2008
B en Inspection and Recall of Tail Rotor Bellcrank P/N 222-012-727-1053/15/2006
en Misidentification of Float Inflation Valve Squib P/N 290229682/17/2006
en Engine - Gearbox - Removal and Replacement of Locking Cup P/N 4-082-094-0111/21/2006
en Tail Rotor Pitch Change Mechanism, Revised Rigging Procedures1/9/2007
en Inspection of Disc Assembly 36300-1 and 37855-13/28/2007
A en Inspection of Tail Rotor Blade Assembly9/13/2007
C en Inspection of Tail Rotor Blade Assembly9/20/2007
D en Inspection of Tail Rotor Blade Assembly11/29/2010
en One-Time Inspection of Staked Bearings4/7/2009
en Main Rotor Pendulum Weight Support P/N 222-011-114-101 and -103 Removal from Service11/10/2009
en Inspection of Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT8/18/2010
A en Inspection of Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT8/30/2011
en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/10/2010
A en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/15/2010
en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM12/9/2011
A en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM6/22/2012
B en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM11/4/2021
C en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM2/24/2022
en Replacement of Swashplate Rotating Ring Assembly Pins5/13/2016
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-105 and 204-001-376-1073/3/2017
en Inspection, Repair and Modification of Tailboom, P/N 222-035-150-1073/21/1985
en Directional Hydraulic Actuator, P/N 222-382-002-101 and Main Rotor Control Dual Servo Actuator, P/N 222-382-001- 101, Inspection of Control Linkage Rivets8/13/1985
A en Rework of Flapping Bearing, P/N 222-310-114-003/-1051/14/1987
en Inspection of Main Rotor Yoke, P/N 222-011-102-1011/14/1988
en Inspection and Replacement of Stabilizer Assembly, P/N 222-035-250-1053/20/1989
A en Inspection and Replacement of Stabilizer Assembly, P/N 222-035-250-1055/23/1989
en Engine, Lycoming LTS 101-750 Series Power Turbine Speed Restriction for Cast Turbine Wheels12/21/1990
en Flapping Bearing, P/N 222-310-114-003/-105/-107/-10912/16/1992
en Torque Check and Inspection of Main Rotor Hub P/N 222-011-101-All and 222-012-101-All, Grip and Flapping Bearing Retaining Bolts4/23/1998
A en Vertical Fin Assembly Installation, Inspection6/9/1998
en Inspection of Main Rotor Huh P/N 222-011-101-all and 222-012-101-All10/12/1998
en Inspection of Swashplate Assembly Drive Pins P/N 222-010-455-0032/15/1999
en Inspection of Tail Rotor Pitch Change Bearings; and Replacement of Hardware12/16/1999
en Inspection of Hydraulic Actuator Support P/N 222-040-125-0015/19/2000
A en Rolls-Royce 250-C30G/2 Engine, Replacement of Compressor Scroll P/N 23066737 and P/N 2307284811/13/2000
en Upper Fuel Enclosure, Right Side, Addition of Drain Provision2/7/2001
en Electrical System, Improvements3/6/2001
en Inspection of Rotating Ring Assembly P/N 222-010-403-113 and -1175/18/2001
A en Inspection of Rotating Ring Assembly P/N 222-010-403-113 and -11710/26/2005
en Replacement of Main Rotor Pendulum Weight Support P/N 222-011-114-1035/18/2001
en Rework of Main Rotor Pendulum Weight Support P/N 222-011-114-1033/28/2002
en Inspection of Main Rotor Hub Assemblies P/N 222-012-101-105 and -1094/1/2002
A en Inspection of Main Rotor Hub Assemblies P/N 222-012-101-105 and -1093/3/2003
en Replacement of Fuel System Check and Relief Valve P/N 222-366-687-1014/9/2002
en Inspection of Main Rotor Hub P/N 222-012-101-All9/23/2003
en Rolls-Royce 250-C30G/2 Engine, Inspection of 4th Stage Turbine Wheels P/N 2306674411/11/2003
C en Tail Rotor Counterweight Bellcrank P/N 222-012-727-003, Removal from Service2/16/2006
en Inspection and Rework of Tail Rotor Blade P/N 222-016-001-123, -123M, -131, and -139M8/27/2004
A en Inspection and Rework of Tail Rotor Blade P/N 222-016-001-123, -123M, -131, and -139M8/28/2006
B en Inspection and Rework of Tail Rotor Blade P/N 222-016-001-123, -123M, -131, and -139M3/31/2008
B en Inspection and Recall of Tail Rotor Bellcrank P/N 222-012-727-1053/15/2006
en Introduction of Power Turbine RPM (Np) Steady State Operation Avoidance6/10/2005
en Introduction of Revised Engine Power Assurance Check Procedures and Revised Run-in Test Procedure for Overhauled Transmission3/13/2006
en Engine, Turbine Assembly - Power Turbine Outer Shaft10/11/2006
en Tail Rotor Pitch Change Mechanism, Revised Rigging Procedures1/9/2007
en Inspection of Disc Assembly 36300-1 and 37855-13/28/2007
A en Inspection of Tail Rotor Blade Assembly9/13/2007
C en Inspection of Tail Rotor Blade Assembly9/20/2007
D en Inspection of Tail Rotor Blade Assembly11/29/2010
en One-Time Inspection of Staked Bearings4/7/2009
en Main Rotor Pendulum Weight Support P/N 222-011-114-103 Removal from Service11/10/2009
en Inspection of Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT8/18/2010
A en Inspection of Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT8/30/2011
en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/10/2010
A en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/15/2010
en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM12/9/2011
A en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM6/22/2012
B en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM11/4/2021
C en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM2/24/2022
en Engine - Spur Adapter Gearshaft, Retaining Ring8/18/2014
en Engine, Compressor Assembly - Inspection of Front Support P/N M250-10051, M250-10052, M250-10059, and M250-100609/3/2014
en Removal of Seat Belt Comfort Clips1/11/2016
en Replacement of Swashplate Rotating Ring Assembly Pins5/13/2016
A en Vertical Fin Assembly Installation, Inspection6/9/1998
en Inspection of Swashplate Assembly Drive Pins P/N 222-010-455-0032/15/1999
en Inspection of Tail rotor Pitch Change Bearings; and Replacement of Hardware12/16/1999
en Mandatory Flight Controls - Rudder Pedal Arm Assembly Inspection9/30/2004
A en Inspection of Rolls-Royce Allison 250-C47B Engine Self-Sealing Magnetic Chip Detectors5/31/2001
A en Inspection and Lubrication of Hanger Bearings 406-040-339-All and 407-340-339-10311/12/2001
en Introduction of Amp Maximum Continuous Electrical Load Limit for Operations Above 10,000' Density Altitude6/16/2000
A en Introduction of Amp Maximum Continuous Electrical Load Limit for Operations Above 10,000' Density Altitude1/14/2003
en Rolls-Royce 250-C47B Engine, Replacement of Compressor Scroll 23066737 and 2307284810/30/2000
en Replacement of Fuel Vent Line12/8/2000
A en Inspection of Bracket 407-040-321-101/1035/30/2001
en Rescue Hoist, BL-16600 Series, Breeze Eastern Customer Alert Bulletin CAB-100-583/6/2001
en Introduction of Fuel Filler Cap Assembly-Shimming and Electrical Bonding Procedures5/23/2001
en Inspection of Aft Fuel Cell Feed Line/Replacement of Aft Fuel Cell Standpipe4/5/2001
en One Time Inspection of the Engine to Transmission Shaft 206-340-300-1056/8/2001
A en Replacement of Oil Cooler Blower Hanger Bearing 407-340-339-10310/25/2001
D en Replacement of Oil Cooler Blower Hanger Bearing 407-340-339-1032/10/2004
A en Introduction of 206-340-300-107 Engine to Transmission Shaft 1250-Hour Overhaul11/21/2001
B en Introduction of 206-340-300-107 Engine to Transmission Shaft 1250-Hour Overhaul4/23/2013
en Introduction of Reducer AS5174D0604 & Tube Assembly 407-076-018-101 to Ensure Unrestricted Hydraulic Fluid Flow Through Solenoid Valve10/12/2001
en Inspection and Lubrication of Tail Rotor Driveshaft Bearing 406-040-339-All, 407-340-339-101/-103 and /-10711/9/2001
C en Inspection and Lubrication of Tail Rotor Driveshaft Bearing 406-040-339-All, 407-340-339-101/-103 and /-1072/10/2004
B en Modification of Tailboom Assembly 407-030-801-101, /-105 and /-107 , and Introduction of New Airworthiness Limitation/Inspection Schedule4/25/2002
C en Modification of Tailboom Assembly 407-030-801-101, /-105 and /-107 , and Introduction of New Airworthiness Limitation/Inspection Schedule8/27/2007
en Introduction of Down Wind Hover Limitation1/7/2002
A en Introduction of Down Wind Hover Limitation3/12/2002
A en Inspection of Aft Crosstube Assembly, 407-050-202-101 High Skid Gear and Emergency Floatation Landing Gear; and Introduction of New Crosstube Assembly -1031/17/2003
en Replacement of Compressor Wash Tubing Assembly and Clearance Check of Firewall Covers with Main Driveshaft3/18/2002
en Introduction of Horizontal Stabilizer Slats, 407-023-001-1033/20/2002
en Inspection of Tailboom Assembly 407-030-801-105, /-107 and Tail Rotor Gearbox Support Casting 406-030-121-1056/5/2002
A en Improvements to Oil Cooler Inlet Airflow10/10/2002
en One Time Check of Swashplate Drive Link Cup Washers, P/N 406-010-412-10110/29/2002
en Tail Rotor Blades 407-016-001-101 and 406-016-100-119 One Time Leak Check12/5/2002
B en Addition of Tail Rotor Gearbox Case 406-040-406-109, /-113 Oil Feed Hole for Duplex Bearing 406-040-432-1032/6/2003
en Engine, Fuel and Control - One Time Inspection of Power Lever (PLA) Signal of the HMU. Engine, Fuel and Control - Inspection of HMU Drive Splines and Power Lever Angle (PLA) Signal6/13/2003
en Assignment of RIN (Retirement Index Number) to All Forward and Aft Crosstube Assemblies10/15/2003
en Rolls-Royce Corporation 250-C47B Engine, Fuel and Control - Release of New Electronic Control Unit (ECU)9/4/2003
en Rolls-Royce 250-C47B Engine, Turbine Assembly - Inspection of 4th Stage Turbine Wheels (23066744)11/21/2003
en Rolls-Royce Corporation 250-C47B Engine, Fuel and Control, - Hydromechanical Unit (HMU) - Incorporate Dual Element PLA Potentiometer1/7/2004
A en Replacement of Tail Rotor Driveshaft Bearing 407-340-339-1013/3/2004
B en Replacement of Tail Rotor Driveshaft Bearing 407-340-339-1019/5/2006
A en Engine, Turbine Section - Inspection of Rolls-Royce Model 250-C47B Third-Stage Turbine Wheels (6898663)9/3/2004
A en Introduction of Power Turbine RPM (Np) Steady State Operation Avoidance6/8/2005
A en Inspection and Rework of Freewheel Aft Bearing Cap 406-040-509-10112/1/2004
en Introduction of New Transient Limit and Power Turbine RPM (Np) Steady State Operation Avoidance6/8/2005
en Rolls-Royce 250-C47B Engine Gearbox Assembly - Inspection and Rework of Gearbox Housing6/30/2005
en Engine, Fuel and Control - Hydromechanical Unit (HMU) Procedures for Checking P1 Nozzle Screen for Contamination7/5/2005
A en Clevis Assembly - Hydraulic Servo Assembly, P/N 41011300 and 4101140011/10/2005
en Verification of Main Rotor Hydraulic Servo Actuator Part Number1/10/2006
en Inspection and Replacement of Horizontal Stabilizer 407-023-801-1099/12/2006
en Engine, Turbine Assembly - Power Turbine Outer Shaft10/12/2006
en Product Improvement - Driveshaft Installation Tool SKSP1425-112/22/2006
en Cargo Hook Stress Corrosion Cracks3/23/2007
en Inspection of Disc Assembly 407-340-340-1033/28/2007
en Tailboom Assembly 407-030-801-107, & 407-530-014-101/-103, with Upper Skin 407-030-801-157 that has been Removed & Reinstalled or Replaced, Inspection of3/28/2007
A en Tailboom Assembly 407-030-801-107, & 407-530-014-101/-103, with Upper Skin 407-030-801-157 that has been Removed & Reinstalled or Replaced, Inspection of8/30/2007
en Emergency Pushout Windows P/N 407-561-113, 407-561-114, 407-561-121, 407-561-122, 407-561-125, 407-561-126 (STC SR01687AT)3/30/2007
en Freewheel Aft Seal 209-340-265-103, Installation Procedures Improvement of and Oil Dam Ring 406-040-547-103, One Time Verification7/19/2007
A en Freewheel Aft Seal 209-340-265-103, Installation Procedures Improvement of and Oil Dam Ring 406-040-547-103, One Time Verification6/7/2011
en Tailboom Assembly 407-030-801-107, and 407-530-014-101/-103, New Inspection Requirements8/27/2007
A en Tailboom Assembly 407-030-801-107, and 407-530-014-101/-103, New Inspection Requirements4/23/2012
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/29/2010
en Addition of NG Limitation at a Given Temperature, Above 10000 Ft Decal5/19/2008
A en Addition of NG Limitation at a Given Temperature, Above 10000 Ft Decal11/17/2008
en One Time Inspection of Hydraulic Pump Driveshaft Assembly 406-040-072-1055/22/2008
en Tailboom Assembly 407-030-801-201, 407-030-801-203 and 407-030-801-205, New Inspection Requirements8/18/2008
en One Time Inspection of Lever Assembly P/N 204-001-320-105 & 407-001-320-1093/10/2009
en Inspection of Vertical Fin Assembly 206-020-113-2333/17/2009
en One Time Inspection of Anti-Drive Link Assembly P/N 406-010-432-1013/27/2009
en One-Time Inspection of Staked Bearings4/7/2009
en One Time Inspection of Tail Rotor Gearbox P/N 406-040-400-All and Tail Rotor Gearbox Case Assembly P/N 406-040-406-All4/29/2009
en Inspection of Hydraulic Servoactuator P/N 206-076-062-105 and -10711/3/2009
en One Time Inspection of Hose Assembly P/N 70-079H100F21012/17/2009
en Inspection of Tail Rotor Blades 406-016-100-119 and 407-016-001-1014/13/2010
A en Inspection of Tail Rotor Blades 406-016-100-119 and 407-016-001-1014/26/2010
B en Inspection of Tail Rotor Blades 406-016-100-119 and 407-016-001-1018/31/2010
en Replacement of Tailboom Attachment Hardware5/3/2010
A en Replacement of Tailboom Attachment Hardware8/30/2010
en Inspection of Main Rotor Mast 407-040-038-101, -105, -109, -111, -111R, -111T, or -111T12/8/2011
en Upper Left Longeron (Channel) 206-031-314-037/-177 and Spare Assembly 206-031-314-219B, Inspection of7/11/2011
A en Upper Left Longeron (Channel) 206-031-314-037/-177 and Spare Assembly 206-031-314-219B, Inspection of8/12/2011
B en Upper Left Longeron (Channel) 206-031-314-037/-177 and Spare Assembly 206-031-314-219B, Inspection of2/14/2012
C en Upper Left Longeron (Channel) 206-031-314-037/-177 and Spare Assembly 206-031-314-219B, Inspection of4/20/2012
D en Upper Left Longeron (Channel) 206-031-314-037/-177 and Spare Assembly 206-031-314-219B, Inspection of8/21/2020
en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-105 and 206-076-062-1076/29/2011
A en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-105 and 206-076-062-1078/15/2011
B en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-105 and 206-076-062-1078/29/2011
en Installation of Crew Seat Clip Retainers6/30/2011
en Inspection of Planetary Pinion Gear P/N 406-040-095-10110/24/2012
en Engine, Assembly - Inspection of MAG Plugs to Detect Metal Generation from the No. 2 Bearing3/27/2013
A en Engine, Assembly - Inspection of MAG Plugs to Detect Metal Generation from the No. 2 Bearing7/24/2013
en Engine, Fuel and Control - Goodrich Electronic Control Unit (ECU) - Overspeed Protection System (OSPS) Power Supply Design Improvement11/20/2013
en Engine Fuel and Control - Electronic Control Unit Assembly11/20/2013
en Introduction of Engine, Fuel and Control - Overspeed Adapter1/23/2014
A en Introduction of Engine, Fuel and Control - Overspeed Adapter4/10/2014
B en Introduction of Engine, Fuel and Control - Overspeed Adapter7/3/2014
C en Introduction of Engine, Fuel and Control - Overspeed Adapter5/4/2016
en Engine - Spur Adapter Gearshaft, Retaining Ring5/21/2014
en Engine, Turbine Assembly - Inspection of 3rd Stage Turbine Wheels 68986637/8/2014
A en Engine, Turbine Assembly - Inspection of 3rd Stage Turbine Wheels 689866311/3/2015
en Engine, Compressor Assembly - Inspection of Front Support P/N M250-10051, M250-10052, M250-10059, M250-100609/3/2014
en Freewheel Assembly Oil Supply Blockage10/7/2014
A en Freewheel Assembly Oil Supply Blockage2/9/2016
en Recall of Fuel Vent Hose3/3/2015
en Inspection and Repair of Main Rotor Mast 407-040-038-1233/3/2015
A en Inspection and Repair of Main Rotor Mast 407-040-038-1233/11/2015
B en Inspection and Repair of Main Rotor Mast 407-040-038-1239/3/2015
en Recall of Fuel Cell 407-362-632-1053/3/2015
en Inspection and Rework of Pylon Support 407-030-425-101 and Stop Support 407-030-428-1017/14/2015
en Removal of Seat Belt Comfort Clips1/11/2016
en Inspection of Air Conditioner Blower Motor Connector1/5/2016
A en Inspection of Air Conditioner Blower Motor Connector8/5/2016
B en Inspection of Air Conditioner Blower Motor Connector2/19/2019
C en Inspection of Air Conditioner Blower Motor Connector7/10/2019
en Inspection of Tail Rotor Driveshaft Segment Assembly2/12/2016
en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-1040410/7/2016
A en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-1040412/8/2016
B en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-104041/16/2017
C en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-104043/3/2017
en Inspection of Main Rotor Expandable Blade Bolt 406- 310-103-101 / -1032/13/2017
en One-Time Torque Check of External Power Receptacle Cable Assemblies2/22/2018
en Inspection of Tail Rotor Gearbox Pitch Change Mechanism Housing 206-011-721-1134/3/2018
en Replacement of Approved Engine Oils Decal 31-056-31DHHP5/22/2019
en Air Comm Corporation Air Conditioner Blower Motor Connector7/10/2019
en Forward Engine Firewall Plug Button, Replacement of7/22/2019
A en Forward Engine Firewall Plug Button, Replacement of9/6/2019
B en Forward Engine Firewall Plug Button, Replacement of7/30/2020
en Side Body Fairing Fasteners, Detailed Visual Inspection of1/15/2021
en Main Rotor Pitch Link Tube Assembly 406-010-413-119/-133/-139, Inspection and Application of Torque Seal Lacquer2/8/2021
en Tailboom Assembly, New Airworthiness Limitation Schedule (ALS) Inspection Requirement7/6/2021
en Fuel System Standpipe Assembly 407-062-032-103, One-Time Inspection & Rework of2/1/2022
en Collective Pitch Transducer 412-074-101-107, Introduction of9/28/2021
en Pilot Cyclic Control Stick Balance, One-Time Verification of10/6/2021
A en Freewheel Assembly Aft Cap 406-040-509-101, Inspection of11/9/2022
en Tailboom Attachment Hardware & Fittings, One-Time Torque Check & Inspection of12/8/2022
en Electrical Harnesses, Inspection of6/29/2023
A en Electrical Harnesses, Inspection of10/30/2023
A en Pilot Cyclic Stick Assembly 206-001-344-105/-109/-115, Inspection & Repair of3/27/2023
en Garmin GSU 75H Air Data Attitude & Heading Reference System, Inspection & Replacement of9/25/2023
en Tail Rotor Blade 406-016-100-119, Inspection of8/14/2023
en Horizontal Stabilizer & Cargo Hook Fittings - Self Locking Inserts, Inspection of1/25/2024
en Tailboom Attachment Hardware and Fittings, Inspection of2/12/2024
A en Tailboom Attachment Hardware and Fittings, Inspection of3/17/2025
en Cyclic Control AFCS Kit Incorrect Hardware, Inspection of5/21/2024
en Standard & High Landing Gear Forward Crosstubes - Inspection of7/25/2024
en Main Rotor Expandable Blade Bolt 406-310-103-103, Removal from Service7/17/2024
en Airframe Fuel Filter Assembly 222-366-621-105 Drain Hole, Inspection of12/16/2024
en Fuel Leak within Shutoff Valve Compartment, One-Time Inspection of12/17/2024
en Tailboom Attachment Bolts New Airworthiness Limitation, Introduction of 6/19/2025
en Tail Rotor Driveshaft Segment Assemblies 407-040-330-101/-105/-107 & Aft Short Shaft Assemblies 407-040-325-101/-105/-107 Gap Under Rivet Head, Inspection of 5/13/2025
en Introduction of Tail Rotor Drive, Shimming Procedure Bearing Support to Bearing Hanger2/27/1997
en Introduction of Allison 250-C47B Engine FADEC, New Configuration7/3/1997
A en Introduction of Allison 250 C47B Engine FADEC, New Configuration (FAA)10/3/1997
en Replacement of Main Rotor Pitch Link Retaining Hardware7/29/1997
en Introduction of Swashplate Duplex Bearing P/N 406-310-402-1038/29/1997
en Replacement of Warning Horns: FADEC Fail, Engine Out, and Low Rotor RPM10/7/1997
en Introduction of Tailrotor Driveshaft, Disc Pack Coupling P/N 406-040-340-101, Torque Check and Special Inspection11/14/1997
C en Modification of Tail Rotor Gearbox P/N 406-040-400-All, Torque Check and Installation Procedures12/4/2001
en Replacement of Engine FADEC Electronic Control Unit (ECU)12/23/1997
en Modification of Cargo Hook Kit 206-706-341-109/-111 Manual and Electrical Release Systems1/30/1998
A en Inspection and Rework of Vertical Fin Assembly P/N 206-020-113-223A, 223B, or -223S6/26/1998
en Modification of Door Latch Assemblies P/N 20898-401, -402, -405 and -4065/27/1998
en Replacement of Driveshaft, Engine-to-Transmission P/N 206-340-300-1036/19/1998
en Replacement of Hydraulic Relief Valve P/N 206-076-036-1017/3/1998
en Engine, Hydromechanical Unit - Inspection of HMU Drive Splines12/4/1998
en Changes to Chapter 4 Airworthiness Limitation Schedule12/10/1998
A en Introduction of Oil Cooler Blower Fan Hanger Bearing 407-340-339-101/103 and Royco 13 per MIL-G-2501310/25/2001
en Modification of Engine Fairing, RH Door Hinge and Hold-Open Mechanism12/21/1998
en One Time Inspection of Main Rotor Pitch Horn 407-010-103-101 and Attaching Hardware1/6/1999
en Inspection of Tailboom 407-030-801-101, /-1054/13/1999
B en Inspection of Tailboom 407-030-801-101, /-1056/14/2001
C en Inspection of Tailboom 407-030-801-101, /-1052/28/2002
A en Introduction of Vne Restoration to 130 KIAS6/9/1999
en Upgrade of Engine FADEC Electronic Control Unit (ECU)4/28/1999
en Replacement of Crew Seat Belt, Restraint Assemblies 407-370-723-101 and -1035/10/1999
en Replacement of Door Latch Baseplate Assembly 3178-201 and 3178-2025/10/1999
en Upgrade to FADEC - Direct Reversion to Manual (DRTM) System9/10/1999
en Replacement of Horizontal Stabilizer-Slats, 407-023-002-11712/7/1999
A en Replacement of Horizontal Stabilizer-Slats, 407-023-002-1173/20/2002
A en Introduction of Vne Restoration to 140 KIAS3/10/2000
B en Introduction of Vne Restoration to 140 KIAS12/3/2000
B en Installation of Increased Capacity Battery (53 Ah), and Retrofit of EFIS Kit Wiring9/30/2002
en Cap Angle, P/N 212-030-191-001, Initial Inspection3/24/2000
B en Cap Angle, P/N 212-030-191-001, Initial Inspection4/23/2024
en Inspection of Collective Lever Pin 412-010-422-101/-103, Retention Bolt NAS6604H5 or 20-057-4-3H3/28/2000
A en Installation and One Time Use of Tail Rotor Counterweight Bellcrank Retention Nut MS14145L69/13/2000
A en Cargo Hook, Onboard System P/N 528-002-009/9/2002
A en EFIS VOR Indication Anomaly Correction8/12/2002
en Inspection and Replacement of Main Hydraulic Servo Actuator Rod End Lock Washer10/19/2000
A en Tail Rotor Blade P/N 212-010-750-009 Through -129 Tip Block Retention Modification12/20/2000
D en Tail Rotor Blade P/N 212-010-750-009 Through -129 Tip Block Retention Modification3/18/2005
en One Time Inspection of Magnetic Brake P/N 204-001-376-0031/19/2001
en Chip Detector Assembly, Tedeco3/30/2001
en Interference Between the Dual-Lamp Searchlight and Flight Controls, Modification to Correct4/25/2001
en Reidentification of Swashplate and Support Assembly, Bolt 204-011-463-001 to a -1098/1/2002
en Inspection and Rework of Tail Rotor Blade Assemblies P/N 212-010-750-011/-113/-11511/22/2002
B en Inspection of Main Rotor Spindle Assembly P/N 412-010-156-105, 412-010-190-101, 412-010-190-103, and 412-010-190-1059/27/2004
en Introduction of Pratt & Whitney Canada Service Information Letter (PT6T-040) Fuel Flow Transducer Kit Removal2/17/2004
en Replacement of Tail Rotor Pitch Horn Assembly P/N 212-011-708-10512/3/2004
en Aeronautical Accessories, Inc. ASB No. AA-03017 for External Hoist Kits1/17/2005
en Cross Head P/N 212-010-775-001, Inspection and Recall of Specific Serial Number Part2/18/2005
en Inspection and Rework of Tail Rotor Blade P/N 212-010-750-009 Through -1294/30/2005
en Misidentification of Float Inflation Valve Squib P/N 290229682/17/2006
A en Modification to Air Conditioner System Made by Air Comm Corporation and Installed Under FAA Approved Supplemental to Type Certificate (STC) #SR00066DE11/23/2006
A en Possible Interference Between 212-040-229-001 Tube Assembly and 212-030-041-233 Support, Modification to Correct12/18/2006
en Inspection of Engine, P3 Filter and Pneumatic System3/26/2007
en Inspection of Disc Assembly 412-340-610-1013/28/2007
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/22/2010
en Inspection/Replacement of AGB Cowling - Shaft Bearing11/1/2007
en Incorporation of Rotor Speed Limitation11/15/2007
en Fuel Capacity Decal Replacement11/15/2007
A en Fuel Capacity Decal Replacement1/6/2009
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643-411/27/2007
en Reduction in Airworthiness Life from 5000 to 4500 Hours and Reidentification of Main Rotor Yoke 412-010-101-123/-127/-129/-1333/4/2008
A en Reduction in Airworthiness Life from 5000 to 4500 Hours and Reidentification of Main Rotor Yoke 412-010-101-123/-127/-129/-1334/14/2009
en High Landing Gear Aft Crosstubes P/N 412-321-1045/12/2008
A en High Landing Gear Aft Crosstubes P/N 412-321-10410/11/2012
en Flight Controls - Hydraulic Servo Actuator Recall for Undersized Radius6/17/2008
en Swashplate Outer Ring Assembly P/N 412-010-407-105, Reduction of Retirement Life11/18/2008
A en Swashplate Outer Ring Assembly P/N 412-010-407-105, Reduction of Retirement Life12/9/2008
B en Swashplate Outer Ring Assembly P/N 412-010-407-105, Reduction of Retirement Life10/22/2009
en Main Rotor Pylon Mount Assembly P/N 204-031-927-105, Remove from Service1/5/2009
en Inspection/Change of Restraint System Assembly with Inertia Reel and Manual Lock Handle2/17/2009
en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1038/24/2009
A en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1039/21/2009
B en Inspection of High Landing Gear Forward Crosstubes P/N 212-321-1039/28/2009
en High Aft Crosstube Assemblies P/N 412-050-011-101, /-103, /-105, /-107, 412-050-045-105: Mandatory Inspection8/25/2009
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL11/9/2009
A en Inspection of Tail Rotor Blade P/N 212-010-750-ALL12/8/2009
en Main Rotor Blade Expandable Bolt P/N 412-010-137-10311/23/2009
A en Main Rotor Blade Expandable Bolt P/N 412-010-137-1037/16/2018
en Crimping of Gearbox Cowl Door Hinges1/11/2010
en Inspection of Transmission Oil Line P/N 70-061L000V360A for Correct Length1/11/2010
en Inspection for Gap Between the Intake Fairing Assembly and the Lower Forward Firewall Horizontal Flange6/16/2010
A en Inspection for Gap Between the Intake Fairing Assembly and the Lower Forward Firewall Horizontal Flange8/18/2010
en Low Skid Gear Forward Crosstubes P/N 212-320-1034/28/2010
en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/10/2010
en High Forward Crosstubes, P/N 205-050-403-031, 412-050-046-101, Mandatory Inspection6/23/2010
en Replacement of Rod End Assemblies 412-310-400-101 and 412-310-400-1031/4/2011
en Inspection of Main Rotor Blade Expandable Bolt P/N 412-010-137-103 - Spacer P/N Sl54020-145/16/2011
en AHRS Realignment Procedure Prior to Flight8/25/2011
en Replacement of Emergency Floatation System Tube Assy 412-073-820-10110/10/2011
A en Replacement of Emergency Floatation System Tube Assy 412-073-820-1017/28/2016
B en Replacement of Emergency Floatation System Tube Assy 412-073-820-10110/5/2016
C en Replacement of Emergency Floatation System Tube Assy 412-073-820-10112/22/2016
en Introduction of Collective Lever 412-010-408-101, 100 Hour Special Inspection9/27/2011
A en Introduction of Collective Lever 412-010-408-101, 100 Hour Special Inspection12/12/2011
en Inspection and Rework of Simple Pendulum Absorber Brackets 412-010-264-101 / -1051/24/2012
A en Inspection and Rework of Simple Pendulum Absorber Brackets 412-010-264-101 / -10512/12/2013
B en Inspection and Rework of Simple Pendulum Absorber Brackets 412-010-264-101 / -1053/19/2014
en Introduction of Collective Lever 412-010-408-101 Flight Hour Penalty5/2/2012
A en Introduction of Collective Lever 412-010-408-101 Flight Hour Penalty7/8/2014
en Engine Fire Extinguisher Bottle Stem Inspection12/18/2012
en One Time Inspection of Swashplate Outer Ring Retaining Bolts in Safety11/29/2012
en Change of Cyclic Controls Fore and Aft Position Sensor Rigging1/3/2013
A en Change of Cyclic Controls Fore and Aft Position Sensor Rigging9/27/2013
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL2/4/2013
en Inspection of Inverter P/N 412-375-079-1014/25/2013
en Inspection of Collective Lever and Swashplate Assembly Retaining Hardware5/13/2013
en Serial Number Verification and Replacement of Transmission and Gearbox Oil Cooler 209-062-501-0058/22/2013
en Flight Controls - Hydraulic Servoactuator Undersized Thread Root Radius11/18/2013
en Main Rotor Drive, Engine-to-Transmission Drive Shaft Retaining Nuts Inspection/Replacement9/2/2014
A en Main Rotor Drive, Engine-to-Transmission Drive Shaft Retaining Nuts Inspection/Replacement12/13/2017
B en Main Rotor Drive, Engine-to-Transmission Drive Shaft Retaining Nuts Inspection/Replacement4/30/2019
en ASB 412AC-2502 Air Conditioner Relay Panel Wiring1/7/2015
A en ASB 412AC-2502 Air Conditioner Relay Panel Wiring10/15/2015
en Introduction of Rotorcraft Flight Manual Temporary Revision for Single Autopilot Operations2/2/2015
A en Introduction of Rotorcraft Flight Manual Temporary Revision for Single Autopilot Operations8/4/2015
en Installation of Hydraulic System #2 - Additional Clamp1/22/2015
en Introduction of Rotorcraft Flight Manual Temporary Revision3/13/2015
en Inspection and Replacement of Engine Oil Check Valve 209-062-520-0019/4/2015
A en Inspection and Replacement of Engine Oil Check Valve 209-062-520-00110/6/2017
en Inspection of Tail Rotor Flight Control Tube 212-001-055-101 and Bearing DAS4-14A1-5129/8/2015
en Replacement of No. 1 Hydraulic System Tube Assembly 212-076-433-0019/15/2015
en Inspection and Replacement of Fuel Check Valve 209-062-607-0019/15/2015
A en Inspection and Replacement of Fuel Check Valve 209-062-607-00110/6/2017
en LCR 100 Attitude Heading Reference Unit (AHRU) P/N 145130-7000 and P/N 145130-7001 Upgrade to P/N 145130-701012/18/2015
en Removal of Seat Belt Comfort Clips1/20/2016
en Replacement of Inverter P/N 412-375-079-101 and -1033/22/2016
en Inspection and Revised Clamping of Transmission Oil Lines 412-040-204-101 and 412-040-200-1013/25/2016
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/3/2017
A en Inspection and Repair of Magnetic Brake Assembly 204-001-376-00311/6/2018
en Verification of Crew Door Jettison Mechanism9/11/2017
en Introduction of Rotorcraft Flight Manual Temporary Revision for 4 Axis Autopilot Operations2/2/2018
A en Introduction of Rotorcraft Flight Manual Temporary Revision for 4 Axis Autopilot Operations9/25/2019
B en Introduction of Rotorcraft Flight Manual Temporary Revision for 4 Axis Autopilot Operations10/8/2019
en Inspection of Engine Fuel Management Module1/4/2018
en Inspection of Main Driveshaft Outer Coupling 214-040-659-0051/30/2018
en Verification of Hanger Bearing Support Brace Assembly 205-030-831-015 Installation9/25/2018
en Inspection of Reduction Gearbox Oil Tube Assembly P/N 212-061-533-0019/24/2019
A en Inspection of Reduction Gearbox Oil Tube Assembly P/N 212-061-533-00110/8/2019
en Tailboom Left Hand Fin Spar Cap P/N 212-030-447-117, Inspection of4/15/2020
en Main Rotor Expandable Blade Bolt 412-010-137-103, One-Time Inspection of5/14/2020
A en Main Rotor Expandable Blade Bolt 412-010-137-103, One-Time Inspection of1/27/2021
en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of11/20/2020
A en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of12/17/2020
B en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of4/6/2021
en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of11/20/2020
A en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of12/17/2020
B en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of1/22/2021
C en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of4/6/2021
en Circuit Breaker Panel P/N 412-589-101, Inspection of8/25/2020
en Tail Rotor Drive Shaft Assembly 412-040-620-103 Inspection and Removal from Service7/15/2021
en Flexible Tubing 130-056C13-1680 and M81914/3-013, Removal of7/28/2021
A en Flexible Tubing 130-056C13-1680 and M81914/3-013, Removal of11/3/2021
B en Flexible Tubing 130-056C13-1680 and M81914/3-013, Removal of11/11/2021
en Tailboom Attachment Hardware, Inspection & Replacement of1/26/2022
A en Tailboom Attachment Hardware, Inspection & Replacement of2/23/2022
en Air Conditioning STC SR00066DE Aft Evaporator Return Screen Installation, Verification of3/30/2022
en Garmin GTN 750 Wiring Harness, Inspection of9/28/2022
en Tail Rotor Driveshaft Assembly 412-040-620-101/-103 & 412-040-621-101/-105/-103/-107, Inspection of1/26/2023
en N1 Control Cable and Wire Harness Installation, Modification of1/19/2023
en N1 Control Cable & Wire Harness Installation, Modification of1/19/2023
A en Main Transmission Oil Tube Assembly 204-040-722-001/204-040-723-001 & Elbow Fitting AS1040W0404, Replacement of7/18/2023
B en Main Transmission Oil Tube Assembly 204-040-722-001/204-040-723-001 & Elbow Fitting AS1040W0404, Replacement of8/22/2023
en Floor Panel Assembly P/N 412-030-373-103 / 412-030-323-112, Inspection of6/26/2023
en Tension Rod Assembly P/N 212-030-170-007, Inspection of9/14/2023
en Main Input Quill Assembly 412-040-263-103 & Tail Rotor Drive Pinion Quill Assembly 212-040-365-133, Replacement of11/28/2023
en Cap Angle, P/N 212-030-191-001, Special Inspection Interval, Reduction of4/22/2024
en Upper Left Hand Tailboom Attachment Fitting, Sealant Removal of4/22/2024
en Main Rotor Yoke 412-010-101-ALL, Inspection of 6/18/2025
en Main Rotor Blade 412-015-300-ALL, One-Time Inspection of 6/30/2025
en Installation of Flex Indicator Kit, P/N 412-703-006-101, Main Rotor Yoke Flexure12/9/1982
A en Inspection of Pitch Horn, P/N 412-010-149-1058/31/1983
A en Replacement of Main Rotor Hub Pitch Horn, P/N 412-010-149-105, and Pin, P/N 412-010-180-1013/13/1985
A en Inspection of Tail Rotor Trunnion Bearing Housing, P/N 212-011-716-0017/23/1986
en Engine-to-Driveshaft Coupling Adapter Installation Procedures6/24/1991
A en Inspection of Swashplate Support Assembly P/N 412-010-453-1011/30/1992
en Model 412 Airspeed Reduction1/27/1992
en Removal of Swashplate Support P/N 412-010-453-1015/14/1992
en Fin Spar Cap 212-030-447-001, Inspection and Replacement8/17/1992
A en Lower Spider P/N 412-040-785-101, Assignment of Retirement Life6/18/1993
en Main Rotor Mast 412-040-101-105/-109/-117/-121/-125/-127/-129 and Main Rotor Spline Plate 412-010-167-105 and 412-010-177-101/-105/-109/-113/-117 Assignment of Retirement Index Number (RIN) "B"8/10/1994
B en Main Rotor Mast 412-040-101-105/-109/-117/-121/-125/-127/-129 and Main Rotor Spline Plate 412-010-167-105 and 412-010-177-101/-105/-109/-113/-117 Assignment of Retirement Index Number (RIN) "B"3/8/1996
A en Inspection of Tail Rotor Yoke P/N 212-011-702-All and Installation of Tail Rotor Flapping Stop/Yield Indicator P/N 212-011-713-10310/17/1997
en Main Rotor Yoke 412-010-101-123/-127 Inspection of and Possible Imposition of a Flight Hour Penalty3/2/1998
A en High Landing Gear Aft Crosstube Assembly P/N 412-050-011-All and P/N 412-050-045-105/-107/-107A, Assignment of a Retirement Life1/19/2001
en Inspection of Collective Lever Pin 412-010-422-103, Retention Bolt NAS6604H5 or NAS6604H43/28/2000
A en Installation and One Time Use of Tail Rotor Counterweight Bellcrank Retention Nut MS14145L6 and MS17826-69/13/2000
A en Cap Angle, P/N 212-030-191-001, Initial Inspection4/22/2024
en Inspection and Replacement of Main Hydraulic Servo Actuator Rod End Lock Washer10/19/2000
A en Tail Rotor Blade P/N 212-010-750-009 Through -129, Tip Block Retention Modification12/20/2000
D en Tail Rotor Blade P/N 212-010-750-009 Through -129, Tip Block Retention Modification3/18/2005
en One Time Inspection of Magnetic Brake P/N 204-001-376-0031/19/2001
en Chip Detector Assembly, Tedeco B37033/30/2001
en Hums DC Power Wiring Modification9/21/2001
en Re-Identification of Swashplate and Support Assembly, Bolt 204-011-463-001 to a -1098/1/2002
en Cargo Hook, Onboard Systems P/N 528-002-008/28/2002
en Inspection and Rework of Tail Rotor Blade Assemblies P/N 212-010-750-113 and -11512/17/2002
en Tail Rotor Blade Assembly P/N 212-010-750-105, -107, -113, -115, Inspection and Refinishing2/6/2003
B en Inspection of Main Rotor Spindle Assembly P/N 412-010-156-105, 412-010-190-101, 412-010-190-103, and 412-010-190-1059/27/2004
en Replacement of Tail Rotor Pitch Horn Assembly P/N 212-011-708-10512/3/2004
en Aeronautical Accessories, Inc. ASB No. AA-03017 for External Hoist Kits1/17/2005
en Cross Head P/N 212-010-775-001, Inspection and Recall of Specific Serial Number Part2/18/2005
en Inspection and Rework of Tail Rotor Blade P/N 212-010-750-009 Through -1294/30/2005
A en Modification to Air Conditioner System Made by Air Comm Corporation and Installed Under FAA Supplemental to Type Certificate (STC) #SR00066DE11/23/2006
A en Possible Interference Between 212-040-229-001 Tube Assembly and 212-030-041-233 Support, Modification to Correct12/18/2006
en Inspection of Engine, P3 Filter and Pneumatic System3/26/2007
en Inspection of Disc Assembly 412-340-610-1013/28/2007
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/22/2010
en Inspection/Replacement of AGB Coupling - Shaft Bearing11/1/2007
en Incorporation of Rotor Speed Limitation11/15/2007
en Fuel Capacity Decal Replacement11/15/2007
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643-411/27/2007
en Reduction in Airworthiness Life from 5000 to 4500 Hours and Reidentification of Main Rotor Yoke 412-010-101-127/-1293/4/2008
A en Reduction in Airworthiness Life from 5000 to 4500 Hours and Reidentification of Main Rotor Yoke 412-010-101-127/-1294/14/2009
en Flight Controls - Hydraulic Servo Actuator Recall for Undersized Radius6/17/2008
en Inspection/Change of Restraint System Assembly with Inertia Reel and Manual Lock Handle2/17/2009
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL11/9/2009
A en Inspection of Tail Rotor Blade P/N 212-010-750-ALL12/8/2009
en Main Rotor Blade Expandable Bolt P/N 412-010-137-10311/23/2009
A en Main Rotor Blade Expandable Bolt P/N 412-010-137-1037/16/2018
en Crimping of Gearbox Cowl Door Hinges1/11/2010
en Inspection of Transmission Oil Line P/N 70-061L000V360A for Correct Length1/11/2010
en Inspection for Gap Between the Intake Fairing Assembly and the Lower Forward Firewall Horizontal Flange6/16/2010
A en Inspection for Gap Between the Intake Fairing Assembly and the Lower Forward Firewall Horizontal Flange8/18/2010
en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/10/2010
en Replacement of Non-Conforming Bus Bars P/N 412-075-120-1239/1/2010
en Replacement of Rod End Assemblies 412-310-400-101 and 412-310-400-1031/4/2011
en Inspection of Main Rotor Blade Expandable Bolt P/N 412-010-137-103 - Spacer P/N Sl54020-145/16/2011
en Introduction of Collective Lever 412-010-408-101, 100 Hour Special Inspection9/27/2011
A en Introduction of Collective Lever 412-010-408-101, 100 Hour Special Inspection12/12/2011
en Inspection and Rework of Simple Pendulum Absorber Brackets 412-010-264-101/-1051/24/2012
A en Inspection and Rework of Simple Pendulum Absorber Brackets 412-010-264-101/-10512/12/2013
B en Inspection and Rework of Simple Pendulum Absorber Brackets 412-010-264-101/-1053/19/2014
en Engine Fire Extinguisher Bottle Stem Inspection12/18/2012
en One Time Inspection of Swashplate Outer Ring Retaining Bolts in Safety11/29/2012
en Change of Cyclic Controls Fore and Aft Position Sensor Rigging1/3/2013
A en Change of Cyclic Controls Fore and Aft Position Sensor Rigging9/27/2013
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL2/4/2013
en Inspection of Inverter P/N 412-375-079-1014/25/2013
en Serial Number Verification and Replacement of Transmission and Gearbox Oil Cooler 209-062-501-0058/22/2013
en Flight Controls - Hydraulic Servoactuator Undersized Thread Root Radius11/18/2013
en Main Rotor Drive, Engine-to-Transmission Drive Shaft Retaining Nuts Inspection/Replacement9/2/2014
A en Main Rotor Drive, Engine-to-Transmission Drive Shaft Retaining Nuts Inspection/Replacement12/13/2017
B en Main Rotor Drive, Engine-to-Transmission Drive Shaft Retaining Nuts Inspection/Replacement4/30/2019
en Inspection and Replacement of Engine Oil Check Valve 209-062-520-0019/4/2015
A en Inspection and Replacement of Engine Oil Check Valve 209-062-520-00110/6/2017
en Inspection of Tail Rotor Flight Control Tube 212-001-055-101 and Bearing DAS4-14A1-5129/8/2015
en Inspection and Replacement of Fuel Check Valve 209-062-607-0019/15/2015
A en Inspection and Replacement of Fuel Check Valve 209-062-607-00110/6/2017
en Removal of Seat Belt Comfort Clips1/20/2016
en Inspection and Revised Clamping of Transmission Oil Lines 412-040-204-101 and 412-040-200-1013/25/2016
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/3/2017
en Verification of Crew Door Jettison Mechanism9/11/2017
en Inspection of Main Driveshaft Outer Coupling 214-040-659-0051/30/2018
en Verification of Hanger Bearing Support Brace Assembly 205-030-831-015 Installation9/25/2018
en Inspection of Reduction Gearbox Oil Tube Assembly P/N 212-061-533-0019/24/2019
en Tailboom Left Hand Fin Spar Cap P/N 212-030-447-117, Inspection of4/15/2020
en Main Rotor Expandable Blade Bolt 412-010-137-103, One-Time Inspection of5/14/2020
A en Main Rotor Expandable Blade Bolt 412-010-137-103, One-Time Inspection of1/27/2021
en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of11/20/2020
A en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of12/17/2020
B en Engine Oil Check Valve P/N 209-062-520-001, Inspection and Replacement of4/6/2021
en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of11/20/2020
A en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of12/17/2020
B en Fuel Check Valve P/N 209-062-607-001, Inspection and Replacement of4/6/2021
en Tail Rotor Drive Shaft Assembly 412-040-620-103 Inspection and Removal from Service7/15/2021
en Tailboom Attachment Hardware, Inspection & Replacement of1/26/2022
A en Tailboom Attachment Hardware, Inspection & Replacement of2/23/2022
en Tail Rotor Driveshaft Assembly 412-040-620-101/-103 & 412-040-621/-105/-107, Inspection of1/26/2023
en Flexible Tubing HCTE-1250-0 & 130-056C10-0970, Removal of6/8/2023
A en Flexible Tubing HCTE-1250-0 & 130-056C10-0970, Removal of5/1/2024
en Floor Panel Assembly P/N 412-030-373-103, Inspection of6/26/2023
en Tension Rod Assembly P/N 212-030-170-007, Inspection of9/14/2023
en Cap Angle, P/N 212-030-191-001, Inspection Interval, Reduction of4/22/2024
en Main Rotor Yoke 412-010-101-ALL, Inspection of 6/18/2025
en Main Rotor Blade 412-015-300-All, One-Time Inspection of 6/30/2025
en Inspection of Tail Rotor Yoke P/N 212-011-702-All, and Installation of Tail Rotor Flapping Stop/Yield Indicator P/N 212-011-713-1039/3/1996
en Inspection of Main Rotor Yoke 412-010-101-123/-127 and Possible Imposition of a Flight Hour Penalty3/2/1998
en Tension Rod Assembly P/N 212-030-170-007, Inspection of9/14/2023
en Cap Angle, P/N 212-030-191-001, Inspection Interval, Reduction of4/22/2024
en Main Rotor Yoke 412-010-101-ALL, Inspection of 6/18/2025
en Main Rotor Blade 412-015-300-ALL, One-Time Inspection of 6/30/2025
en Relocation of Auxiliary Fin Upper Tuning Weight 407-023-003-1454/19/2001
en Replacement of Hydraulic Solenoid "Tee Fitting" P/N AS1003W060404, Tubes P/N's 427-080-058-101 and 427-080-003-1018/20/2001
en Air Speed Limitation Decal, Replacement of P/N 427-020-671-109 and 427-020-671-111 Decal(s)9/18/2001
en Inspection of Engine-to-Transmission Driveshaft Assembly 206-340-300-10510/12/2001
A en Inspection of Engine-to-Transmission Driveshaft Assembly 206-340-300-1053/31/2006
en FAA Type Certification Kit P/N 427-706-019-101/-103 Deactivation and Addition of Drainage Holes for Common Configuration11/9/2001
en Replacement of In-Line Electrical Terminal Junctions11/5/2001
en Height Reduction of Auxiliary Fin P/N 427-035-836-101/-102/-105 and -10611/16/2001
en Relocation of Cyclic Centering Switch6/7/2002
en Presence of and Addition of Tail Rotor Gearbox Case P/N 406-040-406-109 Oil Feed Passage1/22/2003
en Introduction of Air Speed Limitation Decal P/N 427-020-671-121, -123, -125, -127 and -12912/5/2003
en Verification of Pratt & Whitney Canada PW207D Turboshaft Engines Automatic Low Cycle Fatigue Calculation1/13/2004
A en Clevis Assembly - Hydraulic Servo Assembly, P/N 41011300 and 4101170011/14/2005
en Turboshaft Engine Compressor Disc Inspection of and Retaining Nut Replacement6/2/2006
en Replacement of Bus Bar11/7/2006
en Replacement of Vertical Fin to Tail Rotor Gearbox Support Attachment Hardware12/14/2006
A en Replacement of Vertical Fin to Tail Rotor Gearbox Support Attachment Hardware12/18/2009
en Cargo Hook Stress Corrosion Cracks3/26/2007
en Inspection of Disc Assembly 407-340-340-1033/28/2007
en Inspection of Tail Rotor Blade Assembly9/11/2007
A en Inspection of Tail Rotor Blade Assembly9/19/2007
B en Inspection of Tail Rotor Blade Assembly11/29/2010
en Improvement of Transmission Case Set P/N 427-040-200-111 Surface Finish10/3/2007
en Inspection and Modification of Collective Control Idler Link Assembly P/N 427-001-532-1012/27/2008
en Inspection of P3 Fitting4/8/2008
en One Time Inspection of Hydraulic Pump Driveshaft Assembly P/N 406-040-072-1056/26/2008
en One Time Inspection of Lever Assembly P/N 407-001-320-105 and 407-001-320-1093/10/2009
A en One Time Inspection of Anti-Drive Link Assembly of P/N 406-010-432-1013/27/2009
en One-Time Inspection of Staked Bearings4/7/2009
en One Time Inspection of Tail Rotor Gearbox P/N 427-042-400-All and Tail Rotor Gearbox Case Assembly P/N 406-040-406-All4/29/2009
A en One Time Inspection of Tail Rotor Gearbox P/N 427-042-400-All and Tail Rotor Gearbox Case Assembly P/N 406-040-406-All5/27/2009
en Correction of BHT 427 MM, Chapter 49/1/2009
en Inspection of Hydraulic Servoactuator P/N 206-076-062-11110/7/2009
en Rework of Tail Rotor Driveshaft Hanger Bearing Bracket P/N 427-044-223-10110/19/2009
A en Rework of Tail Rotor Driveshaft Hanger Bearing Bracket P/N 427-044-223-10111/17/2009
en Improvement of Cargo Hook Equipment Kit P/N 427-706-900-101 and -1092/8/2010
en Replacement of Tailboom Attachment Hardware3/1/2010
en Inspection of Tail Rotor Blades P/N 427-016-001-109 and 427-016-001-019L3/18/2010
en Transmission and Hydraulic Oil System Modification of Engine4/22/2010
en Inspection and Replacement of Flight Control Bearing P/N MS27645-4A12/10/2010
en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-109 and 206-076-062-1116/29/2011
A en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-109 and 206-076-062-1118/15/2011
B en Clevis Assembly - Hydraulic Servo Assemblies, P/N 206-076-062-109 and 206-076-062-1118/29/2011
en Introduction of Fire Bottle Outlet Tube Protective Cap P/N SC.625-248/5/2013
en Inspection and Replacement of Transmission Oil Check Valve 209-062-520-0019/4/2015
en Inspection of Vertical Fin 427-035-840-105 and 427-035-840-1099/4/2015
A en Inspection of Vertical Fin 427-035-840-105 and 427-035-840-10911/14/2016
en Removal of Seat Belt Comfort Clips1/11/2016
en Inspection of Air Conditioner Blower Motor Connector1/5/2016
A en Inspection of Air Conditioner Blower Motor Connector8/5/2016
en Inspection of Main Rotor Expandable Blade Bolt 406- 310-103-101 / -1032/13/2017
en One-Time Inspection of Transmission Assembly Chip Detector9/18/2019
A en Adjustment of Engine Trim Values9/26/2019
en Transmission Oil Check Valve 209-062-520-001, Inspection and Replacement of2/15/2021
A en Transmission Oil Check Valve 209-062-520-001, Inspection and Replacement of4/6/2021
en Main Rotor Pitch Link Assembly 406-010-413-125/-141, Inspection and Application of Torque Seal Lacquer2/8/2021
A en Pilot Cyclic Stick Assembly P/N 206-001-344-113, Inspection & Repair of3/27/2023
en Main Rotor Expandable Blade Bolt 406-310-103-103, Removal from Service8/7/2024
en Tail Rotor Driveshaft Segment Assemblies 407-040-330-105/-107 & Aft Short Shaft Assemblies 407-040-325-105/-107 Gap Under Rivet Head, Inspection of 5/13/2025
en Introduction of Co-Pilot Seat Track P/N 429-030-110-109A9/29/2010
en Replacement of Forward Center Firewall Access Panel P/N 429-069-501-1051/3/2011
en Introduction of Main Rotor Pitch Link Rod End Bearing Inspection12/19/2011
A en Introduction of Main Rotor Pitch Link Rod End Bearing Inspection1/13/2015
B en Introduction of Main Rotor Pitch Link Rod End Bearing Inspection9/5/2023
en Inspection and Repair of Exhaust Ejector P/N 429-363-111-101/-10212/21/2011
en Changes to Chapter 4 - Airworthiness Limitations Schedule4/30/2012
en Introduction of Transmission Oil Filler Cap and Adapter Assembly P/N 417-1474-35/29/2012
A en Introduction of Transmission Oil Filler Cap and Adapter Assembly P/N 417-1474-38/21/2012
B en Introduction of Transmission Oil Filler Cap and Adapter Assembly P/N 417-1474-38/30/2012
en Air Data Attitude Heading Reference System (ADAHRS) P/N: 429-075-123-103 Potential Pressure Sensor Defect2/23/2013
en Revised Torque Value of Tailboom Attachment Bolts3/26/2013
A en Revised Torque Value of Tailboom Attachment Bolts6/24/2013
en Goodrich External Hoist3/22/2013
en Forward and Aft (F/A) Restraint Spring Bell P/N 429-010-204-101 Elastomer Bond Line Separation4/29/2013
en Replacement of Auxiliary Flapper Valve P/N 429-366-415-1015/2/2013
en Interior Liner Assembly Retaining Screws Possible Interference with Engine 1 Fuel Feed Hose12/12/2013
en 429-001-523-101/-103 and 429-001-532-101/-103 Bellcrank Assembly MS27646-41 Pivot Bearing Replacement2/25/2014
en Hand-Held Fire Extinguisher Bracket 429-799-001-121/-125, Addition of Breakaway Wire6/6/2014
en Goodrich External Hoist11/10/2014
A en Goodrich External Hoist1/6/2015
B en Goodrich External Hoist3/10/2016
C en Goodrich External Hoist2/22/2017
D en Goodrich External Hoist12/7/2020
E en Goodrich External Hoist9/5/2023
en Inspection and Upgrade of Tail Rotor Pitch Link Bearing2/18/2015
A en Inspection and Upgrade of Tail Rotor Pitch Link Bearing4/27/2016
B en Inspection and Upgrade of Tail Rotor Pitch Link Bearing6/15/2016
C en Inspection and Upgrade of Tail Rotor Pitch Link Bearing10/16/2020
en Introduction of Wheeled Landing Gear Door, Improved Hardware3/16/2015
en AmSafe Restraint System Inspection2/24/2015
A en AmSafe Restraint System Inspection6/15/2015
en Introduction of Pylon Restraint Spring Assembly Rod End Serial Number2/26/2015
en Emergency Float Manual Inflation Switch, Replacement of4/27/2015
en 429-001-523-101/-103 and 429-001-532-101/-103 Bellcrank Assembly Inspection, Introduction of5/19/2015
A en 429-001-523-101/-103 and 429-001-532-101/-103 Bellcrank Assembly Inspection, Introduction of3/25/2016
B en 429-001-523-101/-103 and 429-001-532-101/-103 Bellcrank Assembly Inspection, Introduction of5/11/2017
C en 429-001-523-101/-103 and 429-001-532-101/-103 Bellcrank Assembly Inspection, Introduction of8/23/2021
en Sliding Door Lower Roller Engagement Check7/29/2015
B en Sliding Door Lower Roller Engagement Check3/20/2025
en Inspection and Replacement of Engine and Transmission Oil Check Valve 209-062-520-0019/4/2015
A en Inspection and Replacement of Engine and Transmission Oil Check Valve 209-062-520-0019/10/2015
en Introduction of BHT-429-MM, Chapter 4 Changes8/18/2015
A en Introduction of BHT-429-MM, Chapter 4 Changes9/23/2015
en Introduction of Inspection for Fouling Condition between Air Comm Air Conditioner Drain Hose Clamp and Longitudinal SCAS Actuator Connector Backshell9/29/2015
en Introduction of Tail Rotor Pitch Link Corrosion Inspection12/7/2015
en Removal of Seat Belt Comfort Clips1/11/2016
en Inspection of Pylon Pitch Restraint Spring Assembly 429-010-204-1013/15/2016
en Inspection and Repair of Fwd Center Firewall Welded Assembly 429-069-501-101/-109/-113 and Aft Center Firewall Welded Assembly 429-069-504-101/-103/-1055/31/2016
A en Inspection and Repair of Fwd Center Firewall Welded Assembly 429-069-501-101/-109/-113 and Aft Center Firewall Welded Assembly 429-069-504-101/-103/-1056/7/2016
C en Inspection and Repair of Fwd Center Firewall Welded Assembly 429-069-501-101/-109/-113 and Aft Center Firewall Welded Assembly 429-069-504-101/-103/-1053/27/2024
en Introduction of Main Rotor Mast Pole Lower Drive Spline Inspection9/19/2016
A en Introduction of Main Rotor Mast Pole Lower Drive Spline Inspection10/6/2016
en Change of Wheeled Landing Gear Cockpit Control Panel Limitation10/17/2016
A en Change of Wheeled Landing Gear Cockpit Control Panel Limitation7/27/2017
en Recall of Pylon Pitch Restraint Spring Assembly 429-010-204-10111/7/2016
en Introduction of Main Rotor Hub Mast Adapter and Mast Inspection11/10/2016
en Serialization of Wheel Landing Gear Life Limited Parts11/10/2016
en Tail Rotor Blade 429-016-101-105, Inspection of1/16/2017
A en Tail Rotor Blade 429-016-101-105, Inspection of7/6/2021
en Inspection of Condenser Fan Motor Mount Fastener3/6/2017
en Inspection and Improvement of Electrical Installation5/2/2017
A en Inspection and Improvement of Electrical Installation6/12/2017
en Inspection of Condenser Fan Motor Mount Fastener8/31/2017
A en Inspection of Condenser Fan Motor Mount Fastener9/19/2017
B en Inspection of Condenser Fan Motor Mount Fastener11/8/2017
en Introduction of New Crew Door Hinge Screws10/19/2017
en Tail Rotor Gearbox Installation, Inspection and One-Time Torque Check of7/6/2018
en Tail Rotor Gearbox Attachment Hardware Recurring Torque Check, Introduction of7/24/2018
en Centrifugal Force Bearing 429-310-003- 103 Airworthiness Life Limitation, Introduction of7/31/2018
en Main Rotor Mast Assembly 429-040-011-105 Lower Spline Inspection, Introduction of2/26/2019
A en Main Rotor Mast Assembly 429-040-011-105 Lower Spline Inspection, Introduction of4/2/2019
B en Main Rotor Mast Assembly 429-040-011-105 Lower Spline Inspection, Introduction of5/12/2022
en New Horizontal Stabilizer Rib Clamp Screw, Introduction of3/18/2019
en 429-012-120-101 Curvic Coupling, Inspection of4/16/2019
en Trim Runaway Emergency Procedure, Introduction of4/30/2019
en Tail Rotor Gearbox Support Retaining Rivets, Inspection of8/28/2019
A en Tail Rotor Gearbox Support Retaining Rivets, Inspection of11/2/2020
B en Tail Rotor Gearbox Support Retaining Rivets, Inspection of1/27/2021
en One-Time Inspection of Transmission Assembly Chip Detector9/18/2019
A en Adjustment of Engine Trim Values9/26/2019
A en Directional Control Bellcrank Bearing Staking, Inspection of12/2/2019
B en Directional Control Bellcrank Bearing Staking, Inspection of12/19/2019
en Rotorcraft Flight Manual Supplement BHT-429-FMS-19 Revision 4 for Display Unit Map Mode, Introduction of3/4/2020
B en Rotorcraft Flight Manual Supplement BHT-429-FMS-19 Revision 4 for Display Unit Map Mode, Introduction of7/17/2021
en Emergency Flotation System (EFS) Supply Hose, One-Time Inspection of3/30/2020
en Main Rotor Expandable Blade Bolt 429-310-004-101, One-Time Inspection of4/21/2020
en Main Rotor Transmission Debris Pan Assembly 429-040-407-101, One Time Inspection of3/16/2021
en Main Rotor Pitch Change Link Upper Retention Bolt 20-114C5P47AD, One-Time Inspection of9/2/2021
en Swashplate Input Tubes 429-001-020-101 & -107, Inspection of10/21/2021
en Main Rotor Transmission Gearshafts 427-040-113-103 & -111, Inspection of10/23/2021
en Transmission Mounted Bellcranks & Support, Inspection of9/1/2022
A en Transmission Mounted Bellcranks & Support, Inspection of10/27/2022
en Dual Cargo Hook Kits 429-706-081-101/-105/-107/-109/-111/-113, Inspection & Modification of9/28/2022
en Tail Rotor Shaft Assembly 429-044-201-107, Inspection of and Introduction of Airworthiness Limitation Schedule8/28/2023
A en Tail Rotor Shaft Assembly 429-044-201-107, Inspection of and Introduction of Airworthiness Limitation Schedule2/13/2024
en Stability & Control Augmentation System (SCAS) Actuators 429-001-065-107/-109/-111, One-Time Inspection of3/27/2023
A en Stability & Control Augmentation System (SCAS) Actuators 429-001-065-107/-109/-111, One-Time Inspection of9/26/2023
en Main Rotor Pitch Link Rod End 429-010-433-103, One Time Verification of3/12/2024
en Tail Rotor Blade 429-016-101-105 Abrasion Strip, Inspection of3/21/2024
A en Tail Rotor Blade 429-016-101-105 Abrasion Strip, Inspection of5/30/2024
B en Tail Rotor Blade 429-016-101-105 Abrasion Strip, Inspection of11/6/2024
A en Non-Conforming Fuel Probes, Replacement of 2/24/2025
en Main & Tail Rotor Hydraulic Servos 429-382-001-113/-115 Main Control Valve (MCV) Drive Rods, One Time Inspection of 6/16/2025
A en Forward Lift Frame Covers 429-030-565-101/-102/-105/-106 Gap Condition, One Time Inspection & Re-Work of 5/27/2025
en Tail Rotor Pitch Link Assemblies 429-012-212-105 & -107, Inspection of 5/21/2025
A en Rolls-Royce 250-C40B Engine, Inspection of the Self-Sealing Magnetic Chip Detectors7/13/2001
en Instrument Panel Cooling, Improvement6/21/2000
en Inspection of Hydraulic Actuator Support P/N 222-040-125-0015/19/2000
A en Rolls-Royce 250-C40B Engine, Replacement of Compressor Scroll P/N 23066737 and P/N 2307284811/13/2000
en Electrical System, Improvements2/22/2001
A en Electrical System, Improvements1/24/2002
en Swashplate Duplex Bearing P/N 430-310-450-101, Removal from Service1/26/2001
en Upper Fuel Enclosure, Right Side, Addition of Drain Provision2/7/2001
en Removal of Temporary Ambient Air Temperature Limitation4/30/2001
en Drive Hub P/N 430-010-410-101, Inspection and Recall of Specific Serial Number Part7/20/2001
en Isolation of FADEC-ECU Power Supplies2/12/2002
en Replacement of Fuel System Check and Relief Valve P/N 222-366-687-1014/9/2002
en Replacement of Wheel Gear Hydraulic Assembly P/N 430-080-459-101 and Wheel Brake Hydraulic Tube Assembly 430-080-460-101 and 430-080-467-1015/2/2002
en Modification of Electrical Power Feeders10/14/2003
en Revision of Airspeed Limits3/3/2003
en Rolls-Royce 250-C40B Engine, Inspection of 4th Stage Turbine Wheels P/N 2306674411/11/2003
C en Tail Rotor Counterweight Bellcrank P/N 222-012-727-003, Removal From Service2/16/2006
A en Inspection and Rework of Tail Rotor Blade P/N 222-016-001-123, -123M, -131, and -139M11/29/2004
B en Inspection and Rework of Tail Rotor Blade P/N 222-016-001-123, -123M, -131, and -139M8/28/2006
C en Inspection and Rework of Tail Rotor Blade P/N 222-016-001-123, -123M, -131, and -139M3/31/2008
B en Inspection and Recall of Tail Rotor Bellcrank P/N 222-012-727-1053/15/2006
en Introduction of Retirement Life for the Servo Actuator Support Bolts P/N 50-047C8-312/16/2005
en Introduction of Power Turbine RPM (Np) Steady State Operation Avoidance6/10/2005
en Modification of AFCS Air Data Computer, and Replacement of VNE Overspeed Warning Computer, Airspeed Indicator and VNE Converter6/21/2005
en Engine, Fuel and Control - Hydromechanical (HMU) Unit Procedures for Checking P1 Nozzle Screen for Contamination7/11/2005
en Introduction of Revised Engine Power Assurance Check Procedures and Revised Run-in Test Procedure for Overhauled Transmission3/13/2006
en Engine, Turbine Assembly - Power Turbine Outer Shaft10/11/2006
en Tail Rotor Pitch Change Mechanism, Revised Rigging Procedures1/9/2007
en Inspection of Disc Assembly 36300-1, 37855-1 and C048354-13/28/2007
A en Inspection of Tail Rotor Blade Assembly9/13/2007
C en Inspection of Tail Rotor Blade Assembly9/20/2007
D en Inspection of Tail Rotor Blade Assembly11/29/2010
en One-Time Inspection of Staked Bearings4/7/2009
en Introduction of Revised Operating Limits11/30/2009
en Inspection of Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT8/18/2010
A en Inspection of Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT8/30/2011
en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/10/2010
A en Inspection and Replacement of Directional Flight Control Bearing P/N MS27643-412/15/2010
en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM12/9/2011
A en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM6/22/2012
B en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM11/4/2021
C en Upgrade or Overhaul of Hydraulic Servoactuator P/N 222-382-001-107 and Introduction of Servoactuator P/N 222-382-001-111 and/or -111FM2/24/2022
en Introduction of Retirement Life for Main Rotor Hub Attachment Bolts P/N MS21250-0808311/14/2012
en Introduction of New Damage Limits and Airworthiness Inspection Requirements for Main Rotor Yoke P/N 430-010-101-10111/14/2012
en Goodrich External Hoist3/22/2013
en Engine, Assembly - Inspection of MAG Plugs to Detect Metal Generation from No. 2 Bearing8/7/2013
en P/N 430-001-007-101 Tail Rotor Control Tube Assembly, Removal from Service9/3/2013
A en P/N 430-001-007-101 Tail Rotor Control Tube Assembly, Removal from Service6/12/2014
en Engine - Spur Adapter Gearshaft, Retaining Ring8/18/2014
en Engine, Compressor Assembly - Inspection of Front Support P/N M250-10051, M250-10052, M250-10059, and M250-100609/3/2014
en Goodrich External Hoist11/10/2014
A en Goodrich External Hoist1/6/2015
B en Goodrich External Hoist3/18/2016
C en Goodrich External Hoist2/22/2017
en Engine, Turbine Assembly - Inspection of 3rd Stage Turbine Wheels 689866311/3/2015
en Removal of Seat Belt Comfort Clips1/11/2016
en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-1040410/7/2016
A en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-1040412/8/2016
B en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-104041/16/2017
C en Engine, Combustion Assembly - Inspection of Outer Combustion Case P/N M250-104043/3/2017
en 430-075-208-127 and 430-075-208-129 Secondary Airspeed Decal, Replacement of10/10/2018
en One-Time Inspection of Transmission Assembly Chip Detector9/18/2019
en Main Rotor Pitch Link Assembly Clevis and Universal Bearing, Inspection of7/13/2021
A en Main Rotor Pitch Link Assembly Clevis and Universal Bearing, Inspection of12/18/2024
en Main Rotor Pitch Link Assembly Components - Inspection & Airworthiness Life Revision of11/6/2023
en Model 430 Temporary Airspeed Restriction7/11/1997
en Removal of Temporary Airspeed Restriction, Following Damper Yoke Set P/N 430-310-100-101 and 430- 310-107-101, Removal from Service12/19/1997
en Introduction of Damper Blade Set Pin 430-310-104-10512/31/1998
en Vertical Fin Assembly, Installation Inspection and Modification6/12/1998
en Replacement of Lateral Control Tube Assembly P/N 430-001-018-101 and Rework of Forward Fairing P/N 430-061-822-1016/12/1998
en Electrical Power Distribution System, Improvements12/16/1999
en Improvement of Autopilot Resolver Installation5/7/1999
en Inspection of Tail Rotor Pitch Change Bearings; and Replacement of Hardware12/16/1999
en Fuel Quantity Indicating System Calibration12/13/1999
en Changes to Chapter 4 - Airworthiness Limitations Schedule12/17/1999
en Hydraulic Oil Inspection and Pressure Filter Assembly, Installation of9/11/2017
A en Hydraulic Oil Inspection and Pressure Filter Assembly, Installation of2/1/2018
en Transmission Oil Manifold Assembly, Inspection & Clamp Installation Modification of11/20/2017
A en Transmission Oil Manifold Assembly, Inspection & Clamp Installation Modification of9/11/2024
en Electrical Power System Unit and Rotorcraft Flight Manual Temporary Revision, Introduction of11/28/2017
A en Electrical Power System Unit and Rotorcraft Flight Manual Temporary Revision, Introduction of2/14/2018
B en Electrical Power System Unit and Rotorcraft Flight Manual Temporary Revision, Introduction of3/6/2018
C en Electrical Power System Unit and Rotorcraft Flight Manual Temporary Revision, Introduction of9/18/2018
en Modification of Engine Chip Detector System12/6/2017
en Validation of Main Rotor Rigging12/8/2017
en Replacement of SLS-069-050-001 and SLS-069-050-003 Intake Halves1/16/2018
en Replacement of Oat Sensor Assembly SLS-075-003-0012/7/2018
en Inspection of Tail Rotor Gearbox Pitch Change Mechanism Housing 206-011-721-0093/19/2018
A en Inspection of Tail Rotor Gearbox Pitch Change Mechanism Housing 206-011-721-0094/17/2018
en Rotorcraft Flight Manual Temporary Revision, Revision to Abnormal Procedure of HMU AUX CTRL7/25/2018
A en Rotorcraft Flight Manual Temporary Revision, Revision to Abnormal Procedure of HMU AUX CTRL6/5/2019
en Jet B & JP-4 Fuels Flight Manual Limitation, Change of7/27/2018
A en Jet B & JP-4 Fuels Flight Manual Limitation, Change of5/9/2022
en Inspection of Tail Rotor Blade Root End4/2/2019
en Inspection of Transmission Pitch Restraint Aft Attachment Hardware6/27/2019
A en Inspection of Transmission Pitch Restraint Aft Attachment Hardware7/11/2019
en Swashplate Assembly Bearings, One-Time Inspection of7/2/2019
en Horizontal Firewall Screws, Inspection of1/30/2020
en Engine Oil Tank P/N SLS-065-100-037, Inspection of6/19/2020
en Transmission No. 1 Oil Jet Safety Wire, Inspection of5/14/2020
en Flap Restraint Support P/N 206-010-181-101, One-Time Inspection of6/1/2020
en Main Rotor Pitch Link Assembly 206-010-360-005, Inspection and Application of Torque Seal Lacquer2/8/2021
en Main Rotor Blades P/N 206-015-001-119 Root End Doublers, Inspection of11/16/2020
A en Main Rotor Blades P/N 206-015-001-119 Root End Doublers, Inspection of12/9/2020
en Pilot Collective Stick and Grip Assembly M207-20M478-041/-043/-047, One-Time Detailed Inspection of2/20/2021
A en Pilot Collective Stick and Grip Assembly M207-20M478-041/-043/-047, One-Time Detailed Inspection of2/26/2021
B en Pilot Collective Stick and Grip Assembly M207-20M478-041/-043/-047, One-Time Detailed Inspection of3/3/2021
C en Pilot Collective Stick and Grip Assembly M207-20M478-041/-043/-047, One-Time Detailed Inspection of3/11/2021
en Sump Drain Fitting Grommet NAS557-18C, Installation of6/8/2021
en Engine Oil Filter, One Time Inspection of6/17/2021
en Oil System - Dedicated Criteria in the Frame of Bell ASB 505-21-226/17/2021
en Additional Air Conditioner Tubing Clamps, Introduction of7/28/2021
en Right Hand Lateral Center of Gravity, Reduction of8/30/2021
en Fuel Cell Vent Preflight Inspection, Addition of9/30/2021
en Genesys Third Axis Autopilot Installation for Possible Chaffing with Tail Rotor Control Cable, Inspection of10/7/2021
en Rotorcraft Flight Manual BHT-505-FM-1 Figure 1-6 Fuel Operating Envelope (Revision 5), Insertion of5/9/2022
en Engine Fuel Drain Tube & Compressor Wash Tube Clamping, Introduction of12/20/2022
A en Freewheel Assembly Aft Cap 406-040-509-101, Inspection of11/9/2022
en Aft Center of Gravity Airspeed Limitation, Introduction of9/27/2022
en Electrical Harnesses, Inspection of10/24/2022
en Main Rotor Flight Control Rigging Check, Performance of11/3/2022
A en Main Rotor Flight Control Rigging Check, Performance of12/16/2022
A en Anti-Torque Rotor Control Cable Assemblies, Inspection of7/11/2023
en Oil Cooler Fan Assembly Housing Bracket, Inspection & Modification of7/24/2023
en Cyclic Control Tube Support Assembly SLS-030-212-003, Inspection of11/7/2023
en Rotorcraft Flight Manual BHT-505-FM-1 Revision 11 & Associated Temporary Revision Cancelations & Updates, Introduction of4/22/2024
en Vertical Stabilizer Assembly, Top End Cap Assembly, Inspection of1/24/2024
A en Vertical Stabilizer Assembly, Top End Cap Assembly, Inspection & Replacement of 5/7/2025
en Horizontal Stabilizer Assembly & Forward & Aft Attachment Fitting Assemblies, Airworthiness Life Limitation, Reduction of6/10/2025
en Tail Rotor Segmented Driveshaft Assemblies, One-Time Inspection of6/10/2024
en Tailcone Assembly Skins & Frames, One-Time & Recurring Inspection of10/2/2024
A en Tailcone Assembly Skins & Frames, One-Time & Recurring Inspection of 7/1/2025
en Tail Rotor Pitch Link Assembly Installation, One-Time Inspection of10/1/2024
en Crew Seat Restraint Rotary Buckle Assembly 1111475-01, One-Time Inspection of1/13/2025
en Aft Movable Ballast Box Assembly SLS-706-201-007 Ballast Weights, Cease Use of 3/14/2025
A en Aft Movable Ballast Box Assembly SLS-706-201-007 Ballast Weights, Cease Use & Modification of 6/26/2025
en Tailcone Assembly Airworthiness Life Limitation, Reduction of 6/10/2025
en Pilot & Copilot Cyclic & Collective Stick Assemblies, Inspection, Rework, & Introduction of Airworthiness Life Limitation6/10/2025
en Goodrich External Hoist ASB44301-10-153/20/2013
en Goodrich External Hoist10/29/2014
A en Goodrich External Hoist1/9/2015
B en Goodrich External Hoist3/10/2016
C en Goodrich External Hoist7/5/2016
en PC Safety Valve; Valve Stem Over Torque
en PC Safety Valve; Valve Stem Over Torque3/2/2007
en Assignment of a 100 Hour Retirement Life for Stabilizer Bar Mixing Lever Bearings P/N KP6A, AN201KP6A, MS20201KP6A, MS27641-6, and Scissors Assembly Pivot Bearings P/N KP8A, AN201KP8A, MS20201KP8A, MS27641-86/24/2007
en Assignment of a 100 Hour Retirement Life for Stabilizer Bar Mixing Lever Bearings P/N KP6A, AN201KP6A, MS20201KP6A, MS27641-6, and Scissors Assembly Pivot Bearings P/N KP8A, AN201KP8A, MS20201KP8A, MS27641-8
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS276431/29/2008
en One Time Inspection and Replacement of Cyclic Flight Control Bearing, P/N MS27643
en Scissor and Sleeve Assembly, P/N 204-011-401-0215/22/2008
A en One Time Inspection of 205-030-856-157/-159 Elevators12/1/2009
en Main Rotor Head Inboard Fitting 204-012-102-005, Inspection of Specific Serial Numbers5/11/2011
A en Main Rotor Head Inboard Fitting 204-012-102-005, Inspection of Specific Serial Numbers8/2/2011
en One Time Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 204-012-102-005/-0095/31/2011
en P/N 205-001-720-001 Cable Assembly, One Time Inspection for Defective Body, P/N 205-001-742-0018/28/2012
en Inspection of Main Rotor Blade, P/N 204-011-250-113, Grip Pad and Grip Plates1/14/2013
en Assignment of a 1,000 Hour Retirement Life for Tail Rotor Blade Assembly P/N 204-011-702-121 on the UH-1H Helicopter10/21/2013
en Assignment of a 3,300 Hour Retirement Life and Re-Identification of Elevator Assemblies P/N 205-030-856-157 and -159 Installed on the UH-1H Helicopter11/4/2013
en Alternate Spare Part; Swashplate and Support Assembly P/N 204-011-400-129, Reconfiguration and Reidentification of4/21/2015
en Inspection, Rework and Replacement of Main Rotor Blade Bolt 204-011-151-0015/15/2015
en Goodrich External Hoist3/24/2016
en Assignment of a 3,300 Hour Retirement Life and Re-Identification of Scissors Lever Assemblies P/N 212-010-407-001 and -109; and, Assignment of a 1,000 Hour Retirement Limit on P/N 212-010-411-005 Bolt Installed on the UH-1H Helicopter5/31/2016
en Reconfiguration and Reidentification of Alternate Spare Part; Scissors and Sleeve Assembly P/N 204-011-401-0215/31/2016
en Tail Rotor Yoke 204-011-722-005 Chromate Conversion Coating12/21/2016
en Inspection of Main Rotor Blade 204-011-250-005, -1131/13/2017
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/16/2017
en Main Rotor Blade 204-011-250-113, Introduction of Daily Wipe Down Inspection and Special 25 Hour Inspection10/23/2018
en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/7/2021
A en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/22/2021
en Main Rotor Scissors & Sleeve Hub Assembly Collective 204-011-405-013 Identification1/4/2022
en Tailboom Attachment Hardware, Inspection & Replacement of7/20/2022
en Main Beam Cap Angle, P/N 205-030-163-093, Inspection of6/25/2024
B en Main Rotor Mast, P/N 204-011-450-001/-007/-105, Inspection and Retirement Index Number (RIN) Life Reduction8/4/2000
C en Tail Rotor Blade P/N 212-010-750-009 Through -129, Tip Block Retention Modification, Rev "C"3/23/2005
en One Time Inspection of Magnetic Brake P/N 204-001-376-00310/23/2001
A en Ultrasonic Inspection of Main Rotor Grips 204-011-121-009 and -12112/2/2002
A en 1200 Hour Special Inspection Requirements for Main Rotor Hub Pins P/N 204-012-104-003/-0059/6/2002
en Inspection and Rework of Tail Rotor Blade Assemblies P/N 212-010-750-11712/18/2002
en Replacement of Tail Rotor Pitch Horn Assembly P/N 212-011-708-10512/9/2004
en Crosshead P/N 212-010-775-001, Inspection and Recall of Specific Number Part3/8/2005
en Inspection and Rework of Tail Rotor Blade P/N 212-010-750-009 Through -1295/5/2005
en 205-076-508-101 Hydraulic Line1/5/2007
en PC Safety Valve, Valve Stem Over Torque3/2/2007
en Replacement of 20-057-5-24D Bolts with AN175-16 Bolts5/9/2007
en One Time Inspection and Replacement of Cyclic Flight Control Bearings, P/N MS2764312/17/2007
en Scissor and Sleeve Assembly, P/N 204-011-401-0215/21/2008
A en Inspection of Main Rotor Blade P/N 212-015-501-All1/12/2009
B en Inspection of Main Rotor Blade P/N 212-015-501-All1/10/2010
C en Inspection of Main Rotor Blade P/N 212-015-501-All1/13/2017
A en Inspection of Tail Rotor Blade P/N 212-010-750-ALL12/8/2009
A en One Time Inspection of 205-030-856-157/-159 Elevators11/18/2009
B en One Time Inspection of 205-030-856-157/-159 Elevators3/22/2010
en Assignment of Airworthiness Retirement Life for Grip Assembly P/N 204-011-121-1251/14/2010
en Inspection and Replacement of Elevator and Directional Flight Control Bearings P/N MS27643-412/9/2010
en Magnetic Particle Inspection of Main Rotor Hub Inboard Strap Fitting 212-010-103-1015/31/2011
en Inspection and Rework of Main Rotor Grips P/N 204-011-121-009/-1211/5/2012
en 205-030-831-001 Brace, Fitting, Interference Fit with Hanger Bearing Support2/29/2012
en One Time Inspection of Collective Lever 212-010-403-1074/4/2012
en Inspection of Tail Rotor Blade P/N 212-010-750-ALL2/12/2013
en Introduction of Main Rotor Grip 204-011-121-009 Revised Ultrasonic Inspection and Daily Special Inspection Requirements8/7/2014
en Inspection, Rework and Replacement of Main Rotor Blade Bolt 204-011-151-0015/15/2015
en UH-1H-II Stabilizer Bar Damper Lever and Damper Assembly, One Time Inspection3/24/2016
en Inspection and Repair of Magnetic Brake Assembly 204-001-376-0033/16/2017
en Tailboom Left Hand Fin Spar Cap P/N 212-030-447-117, Inspection of4/15/2020
en Main Rotor Hub Inboard Strap Fitting 212-010-103-101 Serial Number Verification and Introduction of a 600-Hour Penalty7/22/2020
en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/7/2021
A en Main Rotor Hub Strap Pin 204-012-104-005, Removal from Service7/22/2021
en Main Rotor Scissors & Sleeve Hub Assembly Collective 204-011-405-013 Identification1/4/2022
en Tailboom Attachment Hardware, Inspection & Replacement of2/28/2022
en Inboard Strap Fitting 212-010-103-101, Recall of10/20/2023
en Main Beam Cap Angle, P/N 205-830-036-119, Inspection of6/24/2024
Approved Model Lists
NameRevisionLangSubjectDate
en Installation of a 24" Tailboom Extension4/12/2002
Component Repair & Overhaul Manuals
NameRevisionLangSubjectDate
12 en 214ST4/15/1986
4 en 2224/28/2006
5 en 2224/15/2009
5 en 2304/28/2006
6 en 2304/15/2009
6 en 4304/15/2009
Flight Manual Supplements
NameRevisionLangSubjectDate
3 en 2302/13/2006
reiss en 2302/13/2006
en 4072/18/2010
6 en 4309/1/2009
3 en 43010/14/2009
3 en 43010/14/2009
2 en 206L-31/13/2009
2 en 206L-11/13/2009
2 en 206L-31/13/2009
3 en 206L-11/13/2009
Flight Manual Temporary Revisions
NameRevisionLangSubjectDate
en 5053/31/2021
en 412EP3/12/2015
en 412EP3/12/2015
en 412EP - S/N 36020 through 360863/12/2015
en 412 - S/N 36087 and Subsequent8/2/2011
en 407GX12/16/2013
en 412EPI3/12/2015
reiss1 en 407GX4/25/2014
en 412 - S/N 36087 and Subsequent3/12/2015
en 407GX6/12/2014
en 5053/3/2021
en 40712/16/2013
reiss1 en 4074/24/2014
en 4076/12/2014
en 412CF8/16/1996
Flight Manuals
NameRevisionLangSubjectDate
D-45 en 206A7/2/2009
B-50 en 206B12/8/2008
B-51 en 206B7/2/2009
B-54 en 206B5/30/2018
B-54 en 206B5/30/2018
10 en 206B311/5/2007
11 en 206B312/8/2008
12 en 206B37/2/2009
17 en 206B35/30/2018
17 en 206B35/30/2018
27 en 206L11/5/2007
28 en 206L12/8/2008
31 en 206L5/30/2018
31 en 206L5/30/2018
7 en 206L4T Light Twin Rotorcraft1/13/2009
5 en 2305/6/2005
5 en 2305/6/2005
6 en 23012/22/2005
3 (reiss) en 4074/26/2005
5 en 4076/24/1997
22 en 412EP11/23/1993
26 en 412EP8/19/2020
10 en 412EP8/16/1996
13 en 412EP8/19/2020
15 en 412EP - S/N 36020 through 3608610/31/2007
20 en 412EP - S/N 36020 through 360868/19/2020
27 en 412 - S/N 36087 and Subsequent10/31/2007
37 en 412 - S/N 36087 and Subsequent8/19/2020
9 en 412EPI - S/N 37002 through 379998/19/2020
5 en Subaru Bell 412EPX - S/N 38001 through 38999 and S/N 39101 through 399998/19/2020
18 en 4309/1/2009
18 en 4309/1/2009
5 en 5058/24/2017
Illustrated Parts Breakdown Manual Temporary Revisions
NameRevisionLangSubjectDate
en 47G-2A, 47G-2A-1, 47G-3, 47G-3B, & 47G-3B-14/24/2015
en 47G-5 and 47G-5A5/15/1980
en 47G-5 and 47G-5A7/26/1983
Illustrated Parts Breakdown Manuals
NameRevisionLangSubjectDate
3 en 205A-14/12/2010
7 en 206L Series9/25/2009
8 en 2124/30/2010
1 en 42710/20/2009
Information Letters
NameRevisionLangSubjectDate
en Inflight RPM Management9/12/1977
en Alert Service Bulletin 47-00-24, Change to Model 47 Series Airworthiness Limitations Schedule6/5/2000
en Recommended Airworthiness Life Limitations8/11/2000
A en Recommended Airworthiness Life Limitations7/22/2010
en Bell 47 Main Rotor Grips9/8/2000
en Bell 47 Main Rotor Grips9/29/2000
en Maintaining Aging Aircraft8/3/2001
en Inspection/Repair of P/N 74-140-914-314/10/2015
en Mast Bearing P/N 47-620-973-0014/18/1979
A en Repair of Fuel System Breakaway Valve11/2/1979
en Tail Rotor Assembly - Safety Considerations2/14/1980
en Main Rotor Blade Fill/Fair Compound2/26/1996
en Main Rotor Mast 204-011-450-All; Inspection and Retirement Index Number (RIN) Life Reduction4/20/2000
A en Federal Aviation Administration (FAA) AD 2000-15-52 Alternate Means of Compliance (AMOC) Statement for Trunnions 204-011-105-001 and 204-011-105-1038/7/2000
en Status Report on Medium Mast ASB 204-00-51, Rev B8/18/2000
en Status Report on Medium Mast ASB 204-00-51, Rev B9/1/2000
en Fin Spar Assembly Replacement1/8/2001
en Status Report on Medium Mast ASB 204-00-51, Rev B3/20/2001
en Status Report on Medium Helicopter Mast ASB 204-00-51, Rev B11/29/2001
en BLR FastFin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters11/23/2004
A en BLR FastFin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters8/18/2010
B en BLR FastFin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters
en Main Rotor Drag Brace P/N 204-011-140-All3/29/2005
en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches12/13/2006
en Introduction of Grip Assembly P/N 204-011-121-1256/24/2008
A en Introduction of Grip Assembly P/N 204-011-121-1257/23/2008
en Derived Empty Weight Clarifications3/18/2010
A en Derived Empty Weight Clarifications4/1/2010
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/7/2013
en Main Transmission Support Case Mounts, New Inspection Requirements8/20/2020
en Main Rotor Grip 204-011-121-1216/2/2000
en FAA Airworthiness Directive 2000-15-528/3/2000
en Introduction of Improved Bearing with Silver-Plated Steel Cage6/20/2001
en Improved Wiper Motors P/N 204-070-907-103/10412/10/2002
en Main Rotor Grip 204-011-121-005/-009-/-117/-121 Ultrasonic Inspection Courses9/30/2003
en Introduction of New Silent Chain Assembly 204-001-739-10712/19/2023
en Main Rotor Hub Pillow Block Inspection Requirements5/17/2024
A en Federal Aviation Administration (FAA) AD 2000-15-52 Alternate Means of Compliance (AMOC) Statement for Trunnions 204-011-105-001 and 204-011-105-1038/7/2000
en Status Report on Medium Mast ASB 205-00-76, Rev B8/18/2000
en Status Report on Medium Mast ASB 205-00-76, Rev B9/1/2000
en Status Report on Medium Mast ASB 205-00-76, Rev B3/20/2001
en Torque on Flight Control Bolts4/20/2001
en Introduction of Improved Bearing with Silver-Plated Steel Cage6/20/2001
en Status Report on Medium Helicopter Mast ASB 205-00-76, Rev B11/29/2001
en Improved Wiper Motors P/N 204-070-907-103/10412/10/2002
en Main Rotor Grip 204-011-121-005/-009-/-117/-121 Ultrasonic Inspection Courses9/30/2003
en P/N 214-070-300-001/-101 Internal Rescue Hoist Cable Cutter and Pyrotechnic Cartridge12/23/2003
en Main Rotor Grips 204-011-121-009, 117 and 1217/12/2004
en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters11/23/2004
A en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters8/18/2010
B en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters9/14/2010
en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches1/24/2005
A en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches12/13/2006
en Main Rotor Drag Brace P/N 204-011-140-All3/29/2005
en Introduction of Grip Assembly P/N 204-011-121-1256/24/2008
A en Introduction of Grip Assembly P/N 204-011-121-1257/23/2008
en Derived Empty Weight Clarifications3/18/2010
A en Derived Empty Weight Clarifications4/1/2010
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/7/2013
en Installation of Alpine Aerotech LP (AAL) Crew Barrier Kit7/13/2020
en Global Alternate Method of Compliance (AMOC) for Airworthiness Directive (AD) 2020-12-107/16/2020
en Main Transmission Support Case Mounts, New Inspection Requirements8/20/2020
en Tail Rotor Blades 212-010-750-All Leak Check2/3/2021
en Windows and/or Sightglasses, 25-Hour Special Inspection6/4/1999
en Main Rotor Mast 204-011-450-All; Inspection and Retirement Index Number (RIN) Life Reduction4/20/2000
en FAA Airworthiness Directive 2000-15-528/3/2000
en Main Rotor Grip 204-011-121-1216/2/2000
en Main Rotor Hub Pillow Block Inspection Requirements5/17/2024
en Main Rotor Mast 204-011-450-All; Inspection and Retirement Index Number (RIN) Life Reduction4/20/2000
en Main Rotor Grip 204-011-121-1216/2/2000
en FAA Airworthiness Directive 2000-15-528/3/2000
A en Federal Aviation Administration (FAA) AD 2000-15-52 Alternate Means of Compliance (AMOC) Statement for Trunnions 204-011-105-001 and 204-011-105-1038/7/2000
en Status Report on Medium Mast ASB 205B-00-30, Rev B8/18/2000
en Status Report on Medium Mast ASB 205B-00-30, Rev B9/1/2000
en Status Report on Medium Mast ASB 205B-00-30, Rev B3/20/2001
en Torque on Flight Control Bolts4/20/2001
en Introduction of Improved Bearing with Silver-Plated Steel Cage6/20/2001
en Status Report on Medium Helicopter Mast ASB 205B-00-30, Rev B11/29/2001
en Ultrasonic Inspection of 204-011-121-009/-121 M/R Grip1/24/2002
en Ultrasonic Inspection of 204-011-121-009/-121 M/R Grip3/18/2002
en Ultrasonic Inspection of 204-011-121-009/-121 M/R Grip4/9/2002
en Improved Wiper Motors P/N 204-070-907-103/10412/10/2002
en Main Rotor Grip 204-011-121-005/-009-/-117/-121 Ultrasonic Inspection Courses9/30/2003
en Main Rotor Grips 204-011-121-009, 117 and 1217/12/2004
en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters11/23/2004
A en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters8/18/2010
B en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters9/14/2010
en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches1/24/2005
A en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches12/13/2006
en Main Rotor Drag Brace P/N 204-011-140-All3/29/2005
en Introduction of Grip Assembly P/N 204-011-121-1256/24/2008
A en Introduction of Grip Assembly P/N 204-011-121-1257/23/2008
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/7/2013
en Main Rotor Grips 204-011-121-009/-121 Life Limitation per FAA Airworthiness Directive 2014-12-047/10/2014
en Global Alternate Method of Compliance (AMOC) for Airworthiness Directive (AD) 2014-12-047/25/2014
en Installation of Alpine Aerotech LP (AAL) Crew Barrier Kit7/13/2020
en Global Alternate Method of Compliance (AMOC) for Airworthiness Directive (AD) 2020-12-107/16/2020
en Main Transmission Support Case Mounts, New Inspection Requirements8/20/2020
en Tail Rotor Blades 212-010-750-All Leak Check2/3/2021
en Main Rotor Hub Pillow Block Inspection Requirements5/17/2024
en Flight Operations in Falling or Blowing Snow1/12/2000
en Main Rotor Blades Useable on 206A/B (TH-67) Models5/18/2000
A en Main Rotor Blades Useable on 206A/B (TH-67) Models6/13/2011
en Swashplate Duplex Bearing 206-010-443-001 & 406-310-402-103 Vee Mark5/26/2000
en Stolen Engines, Rolls Royce 250-C20B7/28/2000
en Hose Assemblies P/N AE1010354GO(*)(*)(*) as Used in Emergency Lightweight Float Kits P/N 206-706-210-All (206L Series) and 206-706-211-All (206A/B Series)2/27/2001
en Main Rotor Flap Restraint Kit 206-706-013 Change in Installation Procedure2/19/2002
en 206B Jet Ranger III Subsequent to S/N 4450 Delivered with TH-67 Aft Fuselage11/13/2003
en The Correct Orientation of Thrust Bearing 206-040-038-All and 406-040-038-All11/17/2003
A en Increased Maximum Take-off Weight, Internal Load8/17/2004
en Transmission Adapter Packing3/4/2005
en 206-033-426-001 and -003 Inspection of Tail Rotor Gearbox Support Assembly4/14/2005
en Inspection and Recall of Filter 50-075-111/28/2005
en Warning Concerning the Installation of STC Strakes from Boundary Layer Research9/7/2006
en Introduction of Improved Auto Relight Kits 206-706-038-003, 206-706-038-101, 206-706-038-105, and 206-706-038-10710/13/2006
en FAA Unapproved Parts Notification11/13/2006
en Modification of Breeze-Eastern Rescue Hoist and Cargo Winches Maintenance Concept12/11/2006
en Solenoid Drain Valve 206-360-503-103 Kit10/6/2008
en Suspect Flap Restraint Support 206-010-191-0014/13/2009
en Inactivation of Kaiser/Ronson Hydraulic Servo Actuator Field Kit and Installation Instructions9/13/2010
A en Inactivation of Kaiser/Ronson Hydraulic Servo Actuator Field Kit and Installation Instructions9/2/2011
en Revision of Maintenance Manual Chapter 4 and 512/14/2010
en Cadmium Plating of Mast Threads2/3/2011
en Introduction of the 206A/B/L Series Component Repair and Overhaul Manual6/11/2012
en Replacement of Tail Rotor Blades 206-016-201-131, 206-016-201-133, 206-016-201-135, and 206-016-201-137 by Van Horn Composite Tail Rotor Blades P/N 2062200-30110/14/2013
A en Replacement of Tail Rotor Blades 206-016-201-131, 206-016-201-133, 206-016-201-135, and 206-016-201-137 by Van Horn Composite Tail Rotor Blades P/N 2062200-3012/23/2015
en Introduction of Tail Rotor Gear Box Cap Assembly P/N 206-040-437-1014/22/2014
en Hydraulic Actuators Usable on 206A/B Models4/22/2014
en Windows and/or Sightglasses, 25-Hour Special Inspection6/4/1999
en Main Rotor Blades Useable on 206L Series Helicopters5/18/2000
A en Main Rotor Blades Useable on 206L Series Helicopters9/25/2009
en Swashplate Duplex Bearing 206-010-443-001 and 406-310-402-103 Vee Mark5/26/2000
en Low Clearance Between Hydraulic Return Tube Assembly 206-076-649-101 and Cyclic Control Tube Assembly 206-001-193-0019/8/2000
en Aft Engine Mount Legs 206-064-107-001, 003, -101, -103, 109 and -1119/22/2000
en Hose Assemblies P/N AE1010354G0(*)(*)(*) as Used in Emergency Lightweight Float Kits P/N 206-706-210-all (206L Series) and 206-706-211-all (206A/B Series)2/27/2001
en Hose Assemblies P/N AE1010354G)(*)(*)(*) as Used in Emergency Lightweight Float Kits P/N 206-706-210-All (206L Series) and 206-706-211-All (206A/B Series)2/27/2001
en Main Rotor Flap Restraint Kit 206-706-013 Change in Installation Procedure2/19/2002
en The Correct Orientation of Thrust Bearing 206-040-038-All and 406-040-038-All11/17/2003
en Importance of Flight Manual Procedures at Low RPM4/5/2004
en Transmission Adapter Packing3/4/2005
en 206-033-426-001 and -003 Inspection of Tail Rotor Gearbox Support Assembly4/14/2005
en Inspection and Recall of Filter 50-075-111/28/2005
en Introduction of Flight Manual Revision4/7/2006
en Introduction of Improved Auto Relight Kits 206-706-044-001 and 206-760-044-1115/3/2006
en Warning Concerning the Installation of STC Strakes from Boundary Layer Research9/7/2006
en Modification of Breeze-Eastern Rescue Hoist and Cargo Winches Maintenance Concept12/11/2006
en Deformation of Washers NAS1149F0632P Used in Tailboom Attachment Hardware6/28/2007
en Inspection and Recall of Main Nut 206-040-078-1033/13/2008
en Bell Model 206L-1 Recent Accident9/23/2008
en Suspect Flap Restraint Support 206-010-191-0014/13/2009
en 206L-1 Engine Upgrade Kit (BHT-206-SI-2050)6/8/2010
en Inactivation of Kaiser/Ronson Hydraulic Servo Actuator Field Kit and Installation Instructions9/13/2010
A en Inactivation of Kaiser/Ronson Hydraulic Servo Actuator Field Kit and Installation Instructions9/2/2011
en Modification of Hydraulic Servo Actuator11/22/2010
en Revision of Maintenance Manual Chapter 4 and 512/14/2010
en Effectivity of Bolt P/N 20-065-06028 Required to Attach the Tailboom to the Fuselage1/20/2011
en Cadmium Plating of Mast Threads2/3/2011
en Extension of Main Rotor Blades Airworthiness Life3/7/2012
en Introduction of the 206A/B/L Series Component Repair and Overhaul Manual6/11/2012
en Disposition of Main Rotor Blades Affected by Recent AD's11/15/2012
A en Disposition of Main Rotor Blades Affected by Recent AD's11/26/2012
en Tactair Hydraulic Servo Actuator (HSA) Field Replacement Instructions for Boot P/N C42642-435/15/2013
en Replacement of Tail Rotor Blades 206-016-201-131, 206-016-201-133, 206-016-201-135, and 206-016-201-137 by Van Horn Composite Tail Rotor Blades P/N 2062200-30110/14/2013
A en Replacement of Tail Rotor Blades 206-016-201-131, 206-016-201-133, 206-016-201-135, and 206-016-201-137 by Van Horn Composite Tail Rotor Blades P/N 2062200-3012/23/2015
en Tactair Hydraulic Servo Actuator (HSA) Cylinder Extension Assembly P/N C42642-88 Product Improvement2/24/2014
en Introduction of Tail Rotor Gear Box Cap Assembly P/N 206-040-437-1014/22/2014
en Tactair Hydraulic Servo Actuator (HSA) Field Replacement Instructions for the Cylinder Extension Bearing P/N C42642-689/30/2014
en Prevention of Engine Foreign Object Damage (FOD)4/28/2015
A en Prevention of Engine Foreign Object Damage (FOD)8/28/2015
en Alternate Means of Compliance (AMOC) for FAA AD 2015-17-02 Dated September 24, 20159/15/2015
en Air Comm Corporation Service Bulletin 206EC-18-07, Bell 206 Air Conditioner Spline Inspection10/15/2018
en Throttle Cable Assembly 1608750-001, Introduction of4/21/2021
en Main Rotor Mast 206-040-535-109 Airworthiness Life, Increase of3/21/2024
en Alternate Means of Compliance to FAA AD 99-02-011/15/1999
en Compliance with ASB 206L-99-11512/23/1999
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/10/2013
en Main Rotor Mast 204-011-450-All; Inspection and Retirement Index Number (RIN) Life Reduction4/20/2000
en Drain Maps5/19/2000
en Main Rotor Grip 204-011-121-1216/2/2000
en FAA Airworthiness Directive 2000-15-528/3/2000
A en Federal Aviation Administration (FAA) AD 2000-15-52 Alternate Means of Compliance (AMOC) Statement for Trunnions 204-011-105-001 and 204-011-105-1038/7/2000
en Status Report on Medium Mast ASB 212-00-106, Rev B8/18/2000
en Status Report on Medium Mast ASB 212-00-106, Rev B9/1/2000
en Status Report on Medium Mast ASB 212-00-106, Rev B3/20/2001
en Installation of Engine Accessory Gearbox Oil Drain Valve P/N 209-062-010-0014/17/2001
en Torque on Flight Control Bolts4/20/2001
en Introduction of Improved Bearing with Silver-Plated Steel Cage6/20/2001
en Engine Manual Fuel Control Operation8/2/2001
en Status Report on Medium Helicopter Mast ASB 212-00-106, Rev B11/29/2001
en Ultrasonic Inspection of 204-011-121-009/-121 M/R Grip1/24/2002
en Ultrasonic Inspection of 204-011-121-009/-121 M/R Grip3/18/2002
en Ultrasonic Inspection of 204-011-121-009/-121 M/R Grip4/9/2002
en Improved Wiper Motors P/N 204-070-907-103/10412/10/2002
en Main Rotor Grip 204-011-121-005/-009-/-117/-121 Ultrasonic Inspection Courses9/30/2003
en Inter Turbine Temperature Indicators10/15/2003
en P/N 214-070-300-001/-101 International Rescue Hoist Cable Cutter and Pyrotechnic Cartridge12/23/2003
en Main Rotor Grips 204-011-121-009, 117 and 1217/12/2004
en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters11/23/2004
A en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters8/18/2010
B en BLR Fast Fin and Strake Installation on All Bell 204, 205, 205B and 212 Model Helicopters9/14/2010
en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches1/24/2005
A en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches12/13/2006
en Crew Seats P/N 412-070-810-All: Notification of Possible Damage to Seat Attenuator Guide Pin P/N 222-620-821-1011/26/2005
en Cold Weather Use of Kerosene Fuels for 212 and 412 Helicopters2/14/2005
en Main Rotor Drag Brace P/N 204-011-140-All3/29/2005
en Engine Fuel Filter Draining1/19/2006
en Model 212 Sheetmetal Engine Deck6/23/2006
en Introduction of Grip Assembly P/N 204-011-121-1256/24/2008
A en Introduction of Grip Assembly P/N 204-011-121-1257/23/2008
en Derived Empty Weight Clarifications3/18/2010
A en Derived Empty Weight Clarifications4/1/2010
en Fuel Filter Light Flickering4/26/2011
en Engine NII (NF) Governor Possible Anomaly9/10/2012
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/7/2013
en Main Rotor Grips 204-011-121-009/-121 Life Limitation per FAA Airworthiness Directive 2014-12-047/10/2014
en Global Alternate Method of Compliance (AMOC) for Airworthiness Directive (AD) 2014-12-047/25/2014
en Installation of Alpine Aerotech LP (AAL) Crew Barrier Kit7/13/2020
en Global Alternate Method of Compliance (AMOC) for Airworthiness Directive (AD) 2020-12-107/16/2020
en Main Transmission Support Case Mounts, New Inspection Requirements8/20/2020
en Introduction of Bell Missionlink Web Site and Missionlink Edge Software10/16/2020
en Tail Rotor Blades 212-010-750-All Leak Check2/3/2021
en Transition to Kamatics Kaflex Main Drive Shaft1/29/2024
A en Collective Stick Tube Special Inspection, Change of5/28/2024
B en Collective Stick Tube Special Inspection, Change of9/11/2024
en Main Rotor Hub Pillow Block Inspection Requirements5/17/2024
en Introduction of Bell MissionLink Revision 26/20/2024
en Combining Gearbox Oil Temp Switch 67121-65-2259/23/1999
en P/N 214-040-825-001 Oil Seal Replacement12/16/2003
en P/N 214-070-300-001/-101 Internal Rescue Hoist Cable Cutter and Pyrotechnic Cartridge12/23/2003
en Tailboom Assembly Intermediate Gearbox Support Fitting Replacement and Tailrotor Driveshaft Alignment9/15/2009
en Derived Empty Weight Clarifications11/30/2010
en Transmission Spindle Assembly, P/N 214-030-606-103, Crack1/30/2012
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/11/2013
en Bell 214 Transition to Erickson Incorporated2/10/2015
A en Bell 214 Transition to Erickson Incorporated5/13/2019
B en Bell 214 Transition to Erickson Incorporated5/20/2019
C en Bell 214 Transition to Erickson Incorporated9/10/2020
en Interchangeability of Main Rotor Pitch Change Links P/N 214-010-410-1338/20/2019
en Interchangeability of Main Rotor Pitch Link Clevis 214-010-485-103 on Pitch Link Assemblies 214-010-410-011/-1299/16/2019
en Parts Applicable to the 2148, 2148-1 & 214ST with "D" Prefixes2/7/2022
en Tailrotor Counterweight Bellcrank Retaining Nut Torque9/19/2000
en Combining Gearbox Assembly Output Adapter Installation4/10/2001
en P/N 214-060-056-109 Electric Starter Motor and Starter Electrical System Maintenance9/27/2002
en P/N 214-040-861-101 Bleed Air Driven Fan Assembly11/12/2003
en P/N 214-040-825-001 Oil Seal Replacement12/16/2003
en P/N 214-070-300-001/-101 Internal Rescue Hoist Cable Cutter and Pyrotechnic Cartridge12/23/2003
en Single Compressor Customized Air Conditioning Installation, P/N 214-899-28512/21/2006
en Information Letter GEN-07-110 and Hydrostatic Test Requirements For P/N 214-073-814 Emergency Flotation System Reservoir Assembly3/21/2007
en Tailboom Assembly Intermediate Gearbox Support Fitting Replacement and Tailrotor Driveshaft Alignment9/15/2009
en Transmission Spindle Assembly, P/N 214-030-606-103, Crack1/30/2012
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/11/2013
en Bell 214 Transition to Erickson Incorporated2/10/2015
A en Bell 214 Transition to Erickson Incorporated5/13/2019
B en Bell 214 Transition to Erickson Incorporated5/20/2019
C en Bell 214 Transition to Erickson Incorporated9/10/2020
en Rotor Brake Operation6/6/2016
en Interchangeability of Main Rotor Pitch Change Links P/N 214-010-410-1338/20/2019
en Parts Applicable to the 2148, 2148-1 & 214ST with "D" Prefixes2/7/2022
en Tail Rotor Blade, P/N 214-015-700, Crack12/14/1998
en Battery Engine Starts10/19/1999
en Interchangeability of Main Rotor Pitch Link Clevis 214-010-485-103 on Pitch Link Assemblies 214-010-410-011/-1299/16/2019
en Windshield, Heated Bird Proof P/N 222-031-105-111/-1124/20/2001
en Hydraulic Hose Inspection7/26/2002
en Tail Rotor Pitch Control Assembly Inspection12/19/2002
en Tail Rotor Counterweight Bellcrank11/11/2003
A en Tail Rotor Counterweight Bellcrank 222-012-727-1055/12/2005
en Main Rotor Blades P/N 222-015-600 Series Inspection3/8/2005
en Breeze-Eastern Rescue Hoist and Cargo Winch Maintenance Concept11/8/2006
en Tail Rotor Blade Identification11/28/2006
en Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT2/28/2011
en Bell Commercial Publication Website "Report- Weight and Balance" Form Discrepancy5/28/2015
en Main Transmission Overhaul and Repair11/24/1999
en Windshield, Heated Bird Proof P/N 222-031-105-111/-1124/20/2001
en Hydraulic Hose Inspection7/26/2002
en Tail Rotor Pitch Control Assembly Inspection12/19/2002
en Tail Rotor Counterweight Bellcrank11/11/2003
A en Tail Rotor Counterweight Bellcrank 222-012-727-1055/12/2005
en Main Rotor Blades P/N 222-015-600 Series Inspection3/8/2005
en Breeze-Eastern Rescue Hoist and Cargo Winch Maintenance Concept11/8/2006
en Tail Rotor Blade Identification11/28/2006
en Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT2/28/2011
en Bell Commercial Publication Website "Report- Weight and Balance" Form Discrepancy5/28/2015
en Main Transmission Overhaul and Repair11/24/1999
en Windshield, Heated Bird Proof P/N 222-031-105-111/-1124/20/2001
en Hydraulic Hose Inspection7/26/2002
en Tail Rotor Pitch Control Assembly Inspection12/19/2002
en Tail Rotor Counterweight Bellcrank11/11/2003
en Main Rotor Blades Useable on Model 230 Helicopter10/1/2004
A en Tail Rotor Counterweight Bellcrank 222-012-727-1055/12/2005
en Inspection of Main Rotor Blades P/N 222-015-600 Series3/8/2005
en Breeze-Eastern Rescue Hoist and Cargo Winch Maintenance Concept11/8/2006
en Tail Rotor Blade Identification11/28/2006
en Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT2/28/2011
en Bell Commercial Publication Website "Report- Weight and Balance" Form Discrepancy5/28/2015
en Main Transmission Overhaul and Repair11/24/1999
en Alternate Method of Compliance (AMOC) to FAA AD 99-06-15; Vne Restriction1/10/2000
en FADEC - Direct Reversion to Manual System (DRTM)1/25/2000
en Main Rotor Blades Useable on 407 Helicopters5/18/2000
en Swashplate Duplex Bearing 206-010-443-001 and 406-310-402-103 Vee MARK5/26/2000
en Recurring Tailboom Inspection6/23/2000
en 407 Oil Cooler Blower Vibration8/7/2000
en Operation of Bell 01 to 130 KIAS - FAA Blanket AMOC for ASB 407-99-27, Revision A Dated 06-09-998/11/2000
en Cabin Fresh Air Ventilation System9/14/2000
en Air Conditioner Compressor Drive Pulley10/4/2000
en Engine Inlet Screen P/N 206-064-213-165/-207, Inspection10/23/2000
en Model 407 Tail Rotor Feathering Bearings11/1/2000
en Installation Instructions for Tail Rotor Pedal Stop Kit 407-704-004-103, Possibility of Interference of the GPS KLN 89B11/28/2000
revised en 407 Accident, S/N 530604/5/2001
revised en Status Report - Accident, 407, S/N 530604/5/2001
en Transport Canada Aviation AD CF-2001-014/5/2001
B en Removal of M407 Airspeed Reduction (Vne)4/10/2001
en Model 407 Transmission Pylon Beams8/2/2001
en Greasing Frequency of Tail Rotor Driveshaft Bearings 407-340-339-101 and -10310/3/2001
en T/R Drive System Modification BHT-407-II-303/1/2002
en Bell 407 Mast - Incident Report1/13/2003
en Bell 407 Incident3/28/2003
en 407 General Information Release4/4/2003
B en 407 FADEC Reliability11/11/2003
en The Correct Orientation of Thrust Bearing 206-040-038-all and 406-040-038-all11/17/2003
en Information on Model 40712/14/2003
en Bearing 407-340-339-101 Depletion12/22/2003
en Introduction of Improved Oil Cooler Blower Housing 206-061-431-1311/23/2004
en Inspection Program Increased to 300 Hours for All FAA-Registered Bell 407 Helicopters1/23/2004
A en Inspection Program Increased to 300 Hours for All FAA-Registered Bell 407 Helicopters7/18/2005
en Introduction of M407 Propulsion Instrument Maintenance Software (M407 PIMS)1/26/2004
en Introduction of Inlet Barrier Filter2/16/2004
en Maintenance and Inspection of Main Rotor Brake Assembly3/15/2004
en Tail Skid Assembly P/N 206-020-110-103 Recall3/19/2004
en Importance of Flight Manual Procedures at Low RPM4/5/2004
en Mast Assembly 407-040-011-101, /-103 and /-105 Sleeve Replacement4/19/2004
en M407 - Alternate Method of Compliance (AMOC) to FAA AD 2004-10-07 For Replacement of Tail Rotor Drive Shaft Bearings 406-040-339-All5/26/2004
en Rolls-Royce CEB 73-60366/28/2004
en Introduction of Upper Engine Cowling Assembly7/19/2004
en 50 Hours Recurring Inspection Cancellation of Thomas Coupling Disks 407-340-340-101/-10310/29/2004
en Inspection and Recall of Filter 50-075-111/28/2005
en Introduction of RADS Script Files v7.321/26/2006
A en Introduction of RADS Script Files v7.3210/27/2011
en Revision of BHT-407-II-30 Special Policy Pricing9/21/2006
en Introduction of Main Rotor Blades 407-015-001-135 and -13710/18/2006
A en Introduction of Main Rotor Blades 407-015-001-135 and -1379/9/2020
A en AirComm Corporation S.T.C. #SR00222DE Air Conditioning Kit1/22/2007
en Modification of Breeze-Eastern Rescue Hoist and Cargo Winches Maintenance Concept12/11/2006
en Shear Bearing P/N 407-310-101-All4/12/2007
en Use of Tool SKSP1425-101 during the Installation and Removal of the Engine to Transmission Driveshaft 407-340-310-10112/21/2007
en Introduction of Dual Tachometer Indicator P/N 407-375-008-111 (Basic Ship) and P/N 407-375-008-113 (Quiet Mode Kit)11/3/2008
en Revision of Maintenance Manual (BHT-407-MM-1) Chapter 4 and 55/28/2010
A en Revision of Maintenance Manual (BHT-407-MM-1) Chapter 4 and 54/11/2013
B en Revision of Maintenance Manual (BHT-407-MM-1) Chapter 4 and 55/16/2017
en Power Take Off Pad (PTP) Double Lip Seal Installation6/8/2010
en BHT-407-MM-1, 12 and 24 Month Scheduled Inspections: Additional Requirements2/22/2012
en Main Rotor Blade Expandable Bolt P/N 406-310-103-101, -103, Inspection Requirements2/22/2012
en Installation and Removal of Main Rotor Mast Nut2/28/2012
en Improvement of Seat Belt Assemblies3/5/2012
en Engine, Compressor Assembly - Replacement of No.2 Bearing5/17/2012
en Duplication of Power Assurance Check (PAC) Logging12/19/2013
en Introduction of Garmin G1000H Software P/N 006-B1237-083/11/2014
A en Introduction of Garmin G1000H Software P/N 006-B1237-086/12/2014
en Driveshaft Mounted Pulley and Drive Ring Installation, Inspection8/21/2014
A en Driveshaft Mounted Pulley and Drive Ring Installation, Inspection9/8/2015
en Mandatory Inspection and Modification of Nose Console at G1 Mount Fasteners1/27/2015
en Prevention of Engine Foreign Object Damage (FOD)4/28/2015
A en Prevention of Engine Foreign Object Damage (FOD)8/28/2015
en Alternate Means of Compliance (AMOC) for FAA AD 2015-17-02 Dated September 24, 20159/15/2015
en 250-C47B and 250-C47B/8 Engine Product Improvements12/11/2015
A en 250-C47B and 250-C47B/8 Engine Product Improvements2/3/2016
en Discontinuation of Support for ECU Software Versions 5.202, 5.356, and 5.3585/4/2016
en 407GX/407GXP Software 006-B1237-10 Nuisance Issues4/11/2016
en 407GX/407GXP 2015 Magnetic Field Model Update8/26/2016
en Component Interchangeability11/30/2016
en Freewheel Assembly Oil Supply System Fitting, Benefits of Installation10/19/2017
en FAA Global Alternative Means of Compliance (AMOC) to Airworthiness Directive (AD) 99-23-18 - 407 Drive Ring Set 406-010-126-107 Airworthiness Limitation Schedule, Increase of6/24/2019
en Garmin G1000H Flight Deck Flight Data Information, Recording of2/5/2020
en Transport Canada Civil Aviation (TCCA) Global Alternate Means of Compliance (AMOC) to Airworthiness Directive (AD) CF-2011-42R1, Fuselage – Longeron Cracking8/21/2020
en Garmin Cycle 20M1 Worldwide Basemap Issue9/17/2020
en Main Rotor Blade Trailing Edge VOIDS/GAPS10/29/2020
en Erroneous GPS Position and Momentary False TAWS Alerts11/12/2020
en Installation of Alpine Aerotech LP (AAL) Crew Barrier Kit2/1/2021
en Garmin G1000H NXi Software 006-B1237-23 Release2/26/2021
en Throttle Cable Assembly 1608750-001, Introduction of4/21/2021
en LED Taxi / Landing Light Assembly LSM-SCD-042-2, Introduction of11/8/2021
en Garmin G1000H NXi Software 006-B1237-23 Release2/26/2021
en Transmission Assembly 407-040-007-103 Time Between Overhaul, Increase of6/12/2023
en Air Comm Corporation Air Conditioner (STC #SR00222DE) Potential Fouling with Bell Automatic Flight Control System (407-706-061 or 407-706-067)1/3/2023
en Main Rotor Blade Bolts, Overhaul Requirement Clarification6/10/2024
en Introduction of Bell MissionLink Revision 26/20/2024
en Main Rotor Mast Assembly 407-040-038-101/-105/-109/-111/-123 Airworthiness Life, Increase of 6/19/2025
en Fuel System Configuration - Type of Jet Fuel7/1/2025
en Progress Report on Bell 407 Vne Reduction3/30/1999
en Update to Model 407 Vne Increase4/9/1999
en M407 - Vne Restoration Update4/16/1999
en AMOC Procedures for Recurring Tail Rotor Gearbox Torque Check4/21/1999
en 407 Air Conditioning, Drive Pulley Installation5/7/1999
en Bell 407 Vne Recovery Status5/25/1999
en Bell 407 Tail Rotor Drive System Disk Pack Assembly Recommended Maintenance7/15/1999
en BHT-407-FMS-28 Increased Internal Gross Weight8/22/1999
en Update Status of Increase to 140 KIAS8/27/1999
en Update Status of Increase to 140 KIAS10/4/1999
en Drain Maps5/19/2000
A en Cap Assembly 412-330-437-1011/28/2002
en Installation of Engine Accessory Gearbox Oil Drain Valve P/N 209-062-010-0014/17/2001
en Torque on Flight Control Bolts4/20/2001
en Introduction of Improved Bearing with Silver-Plated Steel Cage6/20/2001
en Engine Manual Fuel Control Operation8/2/2001
en LCR-92 Attitude and Heading Reference System (AHRS)4/23/2002
en Spindle and Damper Bearing Assembly P/N 412-010-190-103: Notification of Crack11/13/2002
en Improved Wiper Motors P/N 204-070-907-103/10412/10/2002
en Clarification of Rod End Bearing P/N 412-010-182-101, 412-010-448-101 and 412-310-400-101/-103 Airworthiness Limitations Schedule6/5/2003
en Windshield Wiper Parts Identification7/1/2003
en Inter Turbine Temperature Indicators10/15/2003
en P/N 214-070-300-001/-101 Internal Rescue Hoist Cable Cutter and Pyrotechnic Cartridge12/23/2003
en Main Driveshaft Balance Criteria11/3/2004
A en Cyclic and Collective Rigging, Look-a-Like Tool12/3/2004
en BLR FastFin and Strake Installation on All Bell 412EP and 412CF Helicopters11/23/2004
A en BLR FastFin and Strake Installation on All Bell 412EP and 412CF Helicopters8/18/2010
B en BLR FastFin and Strake Installation on All Bell 412EP and 412CF Helicopters9/14/2010
en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches1/24/2005
A en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches12/13/2006
en Crew Seats P/N 412-070-810-All: Notification of Possible Damage to Seat Attenuator Guide Pin P/N 222-620-821-1011/26/2005
en Cold Weather Use of Kerosene Fuels for 212 and 412 Helicopters2/14/2005
en Main Rotor Blade P/N 412-015-200-All & 412-015-300-All: Notification of Loss of Tip Cap Assembly P/N 412-015-035-1052/22/2005
en Engine Fuel Filter Draining1/19/2006
en Tail Rotor Driveshaft Bolts P/N 20-065-0500812/21/2006
en Bell Helicopter Vibration Monitor System Software Upgrade PC-GBS 4.0 Service Pack 25/16/2007
en Release of Honeywell Service Bulletin 7015480-22-0011 Applicable to FZ-706 Digital Flight Control Computer6/3/2008
en JAR OPS 3 Compliance2/4/2009
en Bell Helicopter Vibration Monitor System Software Upgrade PC-GBS 4.1 Service Pack 3A8/10/2009
en Derived Empty Weight Clarifications3/18/2010
A en Derived Empty Weight Clarifications4/1/2010
en High Collective Forces with One Hydraulic System Turned Off4/15/2010
en LCR-100 Attitude and Heading Reference System (AHRS)1/24/2011
en Fuel Filter Light Flickering4/26/2011
en Increase or Elimination of Component Retirement Lives5/16/2012
en Introduction of Improved Engine Torque Pressure Transducer P/N 412-375-006-1036/19/2012
en Engine NII (NF) Governor Possible Anomaly9/10/2012
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/7/2013
en Introduction of a New Mast Bearing Single Lip Seal12/10/2013
en Introduction of New Tail Rotor Blade P/N 412-016-100-1111/21/2014
en Spindle and Damper Assembly 412-010-190-103 / -105 Improvement6/30/2014
en Special Warranty and Repair Information for Spindle and Damper Assembly 412-010-190-103 / -1051/7/2015
en Rotorcraft Flight Manual Limitation per FAA Airworthiness Directive AD 2015-04-042/25/2015
en Introduction of Upper Mast Spline Inspection1/25/2016
en 412 Airworthiness Limitations Schedule Changes12/5/2016
en Air Comm Corporation Service Letter SL-374 Rev C and Service Bulletin ASB 412-1123161/13/2017
en Autopilot Flight Control System (AFCS) Flight Director Standby Mode Functionality Improvement10/28/2019
A en Bell 3-Year Rogerson Kratos (RK) Display Unit Support Plan Offer11/9/2020
en ACA Display Units & Course Heading Select Panel Retrofit, Introduction of3/2/2020
en Main Rotor Blade Root End Weight Pocket6/22/2020
en Installation of Alpine Aerotech LP (AAL) Crew Barrier Kit7/13/2020
en Global Alternate Method of Compliance (AMOC) for Airworthiness Directive (AD) 2020-12-107/16/2020
en Main Transmission Support Case, Mounts and Friction Dampers New Inspection Requirements8/20/2020
en Introduction of Bell Missionlink Web Site and Missionlink Edge Software10/16/2020
en Tail Rotor Blades 212-010-750-ALL and 412-016-100-ALL Leak Check2/3/2021
en Main Rotor Mast Assembly 412-040-366-ALL 2500 and/or 3000 Hours Special Inspection Requirements Change3/3/2021
en Passenger Door Windows Installation11/15/2021
en Extended Hover Performance (EHP) Range Marking3/29/2023
en ACA Course Heading Select Panel (CHSP) Knob Insert Replacement Instructions9/20/2023
en Transition to Kamatics Kaflex Main Drive Shaft1/29/2024
A en Collective Stick Tube Special Inspection, Change of5/28/2024
B en Collective Stick Tube Special Inspection, Change of9/11/2024
en Introduction of Bell MissionLink Revision 26/20/2024
en Introduction of Universal Main Gearbox1/9/2025
en 412EPX Transmission Overhaul Interval Reduction1/14/2025
en Combining Gearbox Oil Temp Switch 67121-65-2259/23/1999
en Drain Maps5/19/2000
en Installation of Engine Accessory Gearbox Oil Drain Valve P/N 209-062-010-0014/17/2001
en Torque on Flight Control Bolts4/20/2001
en Introduction of Improved Bearing with Silver-Plated Steel Cage6/20/2001
en Engine Manual Fuel Control Operation8/2/2001
en Spindle and Damper Bearing Assembly P/N 412-010-190-103: Notification of Crack11/13/2002
en Improved Wiper Motors P/N 204-070-907-103/10412/10/2002
en Clarification of Rod End Bearing P/N 412-010-182-101, 412-010-448-101 and 412-310-400-101/-103/-105 Airworthiness Limitations Schedule6/6/2003
en Introduction of Azimuth Marker 412-040-210-103 and Balance Weight 412-040-214-10310/8/2004
en Main Driveshaft Balance Criteria11/3/2004
A en Cyclic and Collective Rigging, Look-a-Like Tool12/3/2004
en BLR Fast Fin and Strake Installation on All Bell 412EP and 412CF Helicopters11/23/2004
A en BLR Fast Fin and Strake Installation on All Bell 412EP and 412CF Helicopters8/18/2010
B en BLR Fast Fin and Strake Installation on All Bell 412EP and 412CF Helicopters9/14/2010
en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches1/24/2005
A en Change to Recommended Intervals for Planned Maintenance of Breeze-Eastern Rescue Hoists and Cargo Winches12/13/2006
en Crew Seats P/N 412-070-810-All: Notification of Possible Damage to Seat Attenuator Guide Pin P/N 222-620-821-1011/26/2005
en Main Rotor Blade P/N 412-015-200-All & 412-015-300-All: Notification of Loss of Tip Cap Assembly P/N 412-015-035-1052/22/2005
en Engine Fuel Filter Draining1/19/2006
en Inter Turbine Temperature Indicators12/19/2006
en Tail Rotor Driveshaft Bolts P/N 20-065-0500812/21/2006
en Release of Honeywell Service Bulletin 7015480-22-0011 Applicable to FZ-706 Digital Flight Control Computer6/3/2008
en Derived Empty Weight Clarifications4/1/2010
en High Collective Forces with One Hydraulic System Turned Off4/15/2010
en Fuel Filter Light Flickering4/26/2011
en Increase or Elimination of Component Retirement Lives5/16/2012
en Introduction of Improved Engine Torque Pressure Transducer P/N 412-375-006-1036/19/2012
en Engine NII (NF) Governor Possible Anomaly9/10/2012
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/7/2013
en Introduction of a New Mast Bearing Single Lip Seal12/10/2013
en Spindle and Damper Assembly 412-010-190-103 / -105 Improvement6/30/2014
en Special Warranty and Repair Information for Spindle and Damper Assembly 412-010-190-103 / -1051/7/2015
en Main Rotor Blade Root End Weight Pocket6/22/2020
en Installation of Alpine Aerotech LP (AAL) Crew Barrier Kit7/13/2020
en Global Alternate Method of Compliance (AMOC) for Airworthiness Directive (AD) 2020-12-107/16/2020
en Main Transmission Support Case, Mounts and Friction Dampers New Inspection Requirements8/20/2020
en Tail Rotor Blades 212-010-750-ALL and 412-016-100-ALL Leak Check2/3/2021
en Collective Stick Tube Inspection, Change of5/17/2024
en Spindle and Damper Bearing Assembly P/N 412-010-190-103: Notification of Crack11/13/2002
en Throttle Idle Stop11/25/2002
en Tailboom Strake Kit (Boundary Layer Research Inc.)11/23/2004
en Tail Rotor Driveshaft Bolts P/N 20-065-0500812/21/2006
en Increase or Elimination of Component Retirement Lives5/16/2012
en Main Rotor Blade Root End Weight Pocket6/22/2020
en Tail Rotor Blades 212-010-750-ALL and 412-016-100-ALL Leak Check2/3/2021
en Collective Stick Tube Inspection, Change of5/17/2024
en Model 427 Auxiliary Fin Assembly Contracted by Main Rotor Blades12/21/2000
en Greasing Frequency of Tail Rotor Driveshaft Bearings 407-340-339-101 and -10311/5/2001
en Shear Bearing P/N 407-310-101-All4/12/2007
en Alternate Means of Compliance (AMOC) for FAA AD 2015-17-02 Dated September 24, 20159/15/2015
en New DU and DAU Replacement Units1/29/2020
en Rogerson Kratos Display Unit Anomaly5/27/2015
en GNS 530W and GNS 430W NAV/COM/GPS Series Unit Upgrade to Main Software Version 5.20 and GPS Software Version 5.0 per Technical Bulletin 429-15-41 Rev A3/31/2017
en Curtiss-Wright Service Bulletin D51615-31-19 Replacement Underwater Locator Beacon (90-Day) Kit P/Ns 112470, 112813 or 1128149/11/2017
A en Curtiss-Wright Service Bulletin D51615-31-19 Replacement Underwater Locator Beacon (90-Day) Kit P/Ns 112470, 112813 or 1128142/16/2022
en Inspection of Condenser Fan Motor Mount Fastener5/15/2018
A en Bell 3-Year Rogerson Kratos (RK) Display Unit Support Plan Offer11/9/2020
en ACA Display Units & Course Heading Flight Director Panel Retrofit, Introduction of3/2/2020
en Inlet Barrier Filters (IBF), Servicing of5/28/2020
en Health and Usage Monitoring System (HUMS) Software Upgrade PC-GBS 5.7 SP2B9/24/2020
en Introduction of Bell Missionlink Web Site and Missionlink Edge Software10/16/2020
en Inadvertent Actuation of Bell 429 Collective Stick Head Switches10/19/2020
en Erroneous GPS Position and Momentary False TAWS Alerts11/12/2020
en Installation of Alpine Aerotech LP (AAL) Crew Barrier Kit2/1/2021
en Main Rotor Blade Ground Strap 429-015-021-101, Inspection of3/17/2021
en Data Acquisition Flight Recorder (DAFR) Types D51615-202-011 and D51615-202-011-090 Configuration File SW110920 Updated to Release 66/8/2021
en 429 Coupled Flight Director Performance9/2/2021
en Portable Fire Extinguisher - Chapter 5 Interval Inspection Updates6/8/2023
en Aft Crosstube Pivot Assembly Bushing Replacement Procedures6/20/2023
en Alternate Main & Tail Rotor Rotating Control Bolts6/21/2023
en ACA Course Heading Flight Director (CHFD) Knob Insert Replacement Instructions9/20/2023
en Alternative Method of Compliance (AMOC) to Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2024-07-514/23/2024
A en Alternative Method of Compliance (AMOC) to Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2024-07-5110/10/2024
en Global Alternative Means of Compliance (AMOC) with TCCA Airworthiness Directive (AD) CF-2024-11 Applicable to Bell Textron Canada Ltd. (Bell) 429 Helicopters S/N 57001 & Subsequent - Global AMOC No. AARDG-2024/A144/23/2024
en Introduction of Bell MissionLink Revision 26/20/2024
en Improved Air Data/Attitude and Heading Reference System (ADAHRS)8/29/2024
en Main Rotor Hub Yoke Assembly Repair10/7/2024
en Engine Fire Extinguisher Discharge Nozzle Protective Caps10/18/2024
en Global Alternative Means of Compliance (AMOC) with TCCA Airworthiness Directive (AD) CF-2025-29 Applicable to Bell Textron Canada Ltd. (Bell) 429 Helicopters S/N 57001 & Subsequent – Global AMOC NO. AARDG-2025/A376/18/2025
en Main Rotor Blade Tip Covers5/16/2000
en 430 Hydraulic Reservoir Sight Glass9/26/2000
en Windshield, Heated Bird Proof P/N 222-031-105-111/-1124/20/2001
en Hydraulic Hose Inspection7/26/2002
en Installation & Removal of P/N 50-047C Series Bolts8/1/2002
en Tail Rotor Pitch Control Assembly Inspection12/19/2002
en Tail Rotor Counterweight Bellcrank11/11/2003
B en Tail Rotor Counterweight Bellcrank 222-012-727-1055/12/2005
en Rolls-Royce CEB 73-5027 and CEB 73-50301/5/2005
en Introduction of BHT-430-FMS-1, Revision 57/19/2006
en Tail Rotor Blade Identification11/28/2006
en Main Transmission4/16/2009
en Hydraulic Servoactuator P/N 222-382-001-107 Manufactured by Woodward HRT2/28/2011
en Engine, Compressor Assembly - Replacement of No.2 Bearing5/17/2012
en Bell Commercial Publication Website "Report- Weight and Balance" Form Discrepancy5/28/2015
en New EFIS and IIDS Replacement Units1/29/2020
en Main Transmission Overhaul and Repair11/24/1999
en Integrated Instrument Display System (IIDS) P/N 430-375-001-105, Year 2000 Compliance12/6/1999
en MSG-3 Combining Scheduled Maintenance Tasks2/17/2017
en Bose® Headset Short Cord4/29/2019
en ECU Fail CAS Message7/8/2019
en Arrius 2 - Engine Oil9/17/2019
en Engine Reduction Gearbox Oil Overfilling Effects9/24/2019
en Hydraulic Servo Actuator Leakage Rates11/1/2019
en 30 Days Fire Extinguisher Recurring Inspection11/6/2019
en Radar Altimeter Self-Test Inhibit Equipped with Cargo Hook Kit1/16/2020
en Garmin G1000H Flight Deck Flight Data Information, Recording of2/5/2020
en 505 Garmin 20M1 Basemap Issue9/17/2020
en Forward Tail Rotor Driveshaft Corrosion10/7/2020
en Erroneous GPS Position and Momentary False TAWS Alerts11/12/2020
en Pulley Assembly 505AC-3200-31 Lubrication Interval2/4/2021
en ASB 505-21-20, Pilot Collective Stick and Grip Assembly Update3/3/2021
en Cyclic and Collective Boosted Bellcrank / Link Assembly M207-20M225-041, M207-20M361-041 and M207-20M485-041 Spherical Bearing Upgrade Initiative4/6/2021
A en Cyclic and Collective Boosted Bellcrank / Link Assembly M207-20M225-041, M207-20M361-041 and M207-20M485-041 Spherical Bearing Upgrade Initiative10/25/2022
B en Cyclic & Collective Boosted Bellcrank / Link Assembly M207-20M225-041, M207-20M361-041 & M207-20M485-041 Spherical Bearing Upgrade Initiative5/20/2025
en Global Alternate Method Of Compliance (AMOC) for Airworthiness Directive (AD) 2021-06-063/29/2021
en 505 Garmin Flight Control (GFC) 600H Pedal Oscillation Observed Under Gusty/Turbulent Air Conditions4/7/2022
en Garmin G1000H NXI Software 006-B2472-24, Introduction of5/3/2023
en Alternative Means of Compliance (AMOC) for TCCA Airworthiness Directive (AD) CF-2023-16 - Global AMOC No. AARDG-2023/A104/4/2023
en Engine Oil Misting/Projection12/18/2023
en Damage to Skid Tubes P/N 602-041-101 & 602-041-102 Due to Improper Lifting During Ground Support Operations1/18/2024
en Main Rotor Mast 206-040-535-109 Airworthiness Life, Increase of3/21/2024
en Safran Helicopter Engines, Arrius 2R Service Bulletin No. 319 72 4853 (Module M02, Gas Generator, High Pressure Turbine Blades)6/20/2024
en Lithium-Ion Battery Technology Explained1/8/2025
en Alternate Means of Compliance (AMOC) to Airworthiness Directive CF-2024-03, Distribution of1/8/2025
en Damage to Aluminum Rigid Lines Caused by Identification Tape1/25/2000
en Technical Publications Revision Status Website5/26/2000
en Cold Expansion Tools and Sleeves7/18/2000
en Breeze Eastern 300 LBS Rescue Hoist P/N BL-16600-110 and BL-16600-170 and Aeronautical Accessories Inc. (AAI) 300 LBS Rescue Hoist P/N 407-979-1009/8/2000
en Post Wiring Inspection After Customizing Modification11/13/2000
en Rotor Analysis and Diagnostic System (RADS-AT) Training Course11/16/2000
en Procedure for Requesting BHT-Approved Structural Repair3/20/2001
en Fuel Cell File & Storage4/26/2001
A en Fuel Cell File & Storage6/5/2017
en Helicopter External Noise Levels4/26/2001
en Turnbuckle P/N 204-011-137-001 (Pitch Link Barrel)6/19/2001
en Replacement of Exxon Turbine Oils by Air BP Oils6/25/2001
en Rotor Analysis and Diagnostic Systems (RADS-AT) Training Course7/5/2001
en Use of Unapproved Parts from Surplus Military Inventory8/28/2001
en Type MA-6/8 Inertia Reel Assemblies10/8/2001
en Primer on Rotor Brake Disc Friction Surfaces10/11/2001
en Rotor Analysis and Diagnostic Systems (RADS-AT) Manufacturing/Support Changes and Upcoming Training Course3/6/2002
en New Internet Service Provided to Bell Customers4/4/2002
en RADS-AT Training9/5/2002
en Defective NAS516-1A Grease Fittings1/31/2003
A en Defective NAS516-1A Grease Fittings9/10/2012
en Inspection and Surface Protection of Steel Parts2/28/2003
en New Repair Angle Standard3/4/2003
en Receipt of Service Directives On-Line6/19/2003
A en Receipt of Service Directives On-Line4/8/2009
B en Receipt of Service Directives On-Line12/18/2023
en Expansion of Product Support Engineering Service8/8/2003
en Bearing Grease Lubricant8/13/2003
en Expanded Use of Retirement Index Numbers (RIN)10/10/2003
en Use of High-Pressure Washer Around Helicopters11/21/2003
en Procedure for Requesting BHT-Approved Structural Repairs1/6/2004
en Replacement of Hand Held Fire Extinguisher6/14/2004
B en Changes to BHT Customer Property Return (CPR) Process3/15/2006
C en Changes to BHT Customer Property Return (CPR) Process3/3/2011
D en Changes to BHT Customer Property Return (CPR) Process4/9/2012
E en Changes to BHT Customer Property Return (CPR) Process9/3/2013
F en Changes to BHT Customer Property Return (CPR) Process4/21/2021
en Superseded Rivets8/3/2004
en Information Regarding the Handling and Testing of Cartridges12/1/2004
en Rolls-Royce Technical Publications Delivered with New Production Helicopters12/20/2004
en Wet Installation Primer Application2/7/2005
en Seat Belt and Shoulder Restraint Webbing, Inspection Guidelines2/28/2005
en Introduction of New Temperature Indicator "Temp-Plate" Sealer12/15/2005
en 2006 Maintenance & Operations (M&O) Conferences1/12/2006
en Availability of Electronic Publications3/28/2006
A en Availability of Electronic Publications2/26/2007
B en Availability of Electronic Publications4/7/2008
reiss en Availability of Electronic Publications1/11/2010
reiss en Availability of Electronic Publications12/13/2016
en Procedures for Providing Customer/Contact Information8/23/2006
en Clarification of Proper Assembly Torque Technique When Using Conical Seal Washers on Flared End Fittings1/15/2007
en Clarification on Part Numbers Identification2/9/2007
en Continuing Qualification and Maintenance of Pressure Cylinders and Squibs2/16/2007
en Risk of FOD of Fluid and Pneumatic Systems Malfunction Due to Cap Plugs4/20/2007
en Shelf Life of Temp-Plates P/N 6000-1, 6000-2 and 6000-34/20/2007
A en Shelf Life of Temp-Plates P/N 6000-1, 6000-2 and 6000-34/7/2022
en Compatibility of Newly Installed Equipment7/17/2007
en Artex Service Bulletins SN019 & SN0202/25/2008
en Aircraft Model Designations and Applicability to Bulletins6/16/2008
en Introduction of Skybooks Electronic Log Books2/16/2009
en Inactivation of psemil214@bellhelicopter.textron.com Email Address11/17/2009
en Breeze-Eastern Cargo Hook Maintenance Concept8/12/2010
A en Breeze-Eastern Cargo Hook Maintenance Concept3/24/2021
en Applicability of Bulletins After Incorporation into the Maintenance Manual8/12/2010
en New Bulletin Format12/22/2010
en Operation of Bell Aircraft near Volcanic Activity10/4/2011
en GE Aviation Customer Database/Review Process3/5/2012
en Paper Distribution of Commercial Technical Publications5/30/2012
en Electronic Technical Publications Website Now Supports Tablet and Smart Phone Devices7/9/2012
en Bell Helicopter and Maryn International Products9/27/2012
en Torque Application on Fluid Lines and Fittings11/27/2012
en Product Service Letter, Introduction2/18/2013
en Electronic Technical Publications - Introduction of the "Offline Library" Feature9/13/2013
en Vista Part Number Substitution3/25/2014
A en Vista Part Number Substitution4/22/2014
en Discontinuation of DVD Products7/22/2014
en Chemically Assisted Super Finishing1/30/2015
en New Technical Publications Pay-for-Paper Policy5/1/2015
A en New Technical Publications Pay-for-Paper Policy12/13/2016
en Clearfix Aerospace Acrylic Plastic Window Restoration5/11/2015
A en Clearfix Aerospace Acrylic Plastic Window Restoration9/24/2020
en Non-Aviation Transmitters Installed In Helicopters8/11/2015
en Garmin Worldwide Navigation Database Service Advisory2/23/2016
en Applicability of Service Directives to Spare Parts3/31/2017
en Product Support Engineering New Email Addresses3/6/2018
A en MS21042 and NAS1291 Series Nuts, Supersession of8/9/2018
en Historical Service Record Requirements for on-Condition Composite Main Rotor Yokes, Main and Tail Rotor Blades9/25/2018
en Simplified Product Support Engineering Email10/29/2018
A en Simplified Product Support Engineering Email11/27/2018
en Procedure for Requesting Bell-Approved Structural Repairs1/9/2019
A en Procedure for Requesting Bell-Approved Structural Repairs2/15/2022
en Utilization of Anti-Icing Additive in the Fuel System5/7/2019
en Freeflight Systems Service Information Letter SILFFS22-2000-101-GPS-EPOCH, Software Update6/11/2019
en ACR Electronics Artex-Branded Emergency Locator Transmitter G-Switch Testing and Maintenance (Service Bulletin - ASB1000)6/25/2019
en Product Support Engineering Revised Contact Information10/15/2019
en Cleaning / Disinfecting Recommendations for Coronavirus (COVID-19)3/17/2020
en Bell Spares System Part Number Substitution5/5/2020
en Utilization of Biocide Additive in the Fuel System7/6/2020
en Customer Property Return Process4/21/2021
en Interchangeability of Agusta and Bell Manufactured Parts5/10/2021
en Defective Pitot/Static Elbow Fitting 50-012-13N4025/12/2021
en Contacting Product Support Engineering1/6/2022
en Structural Repairs Policy Change1/19/2022
en Procedure for Requesting Bell-Approved Structural Repairs2/15/2022
en Use of Bell Recommended Vibration Analysis & Balancing Equipment3/23/2022
en Shelf Life of Temp-Plates 6000-1, 6000-2 & 6000-34/7/2022
en Bellcustomer.com Website Release Notification Emails12/18/2023
en Helicopter & Engine Storage2/22/2024
en Soldering of Pitot Tube Connectors9/9/2024
en THIXO SYN (C-172) Grease Obsolescence12/19/2024
en Introduction & Approval of GE’S Next Generation Rotor Analysis Diagnostic System (RADS-NG)3/25/2025
A en Improved Tail Rotor 90/42 Degree Gearbox Oil Filler Caps10/19/1999
A en Interchangeability of Agusta and Bell Manufactured Parts6/2/2006
B en Interchangeability of Agusta and Bell Manufactured Parts5/10/2021
en Gimbal Arm Corrosion and Maximum Service Life of SX-16 Nightsun and SX-5 Starburst Searchlight11/17/1999
en Change to Magnetic Particle Inspection on Spider P/N 204-040-785-0031/27/2021
en Main Rotor Mast 204-011-450-All; Inspection and Retirement Index Number (RIN) Life Reduction4/20/2000
en Main Rotor Grip 204-011-121-1216/2/2000
en FAA Airworthiness Directive 2000-15-528/3/2000
A en Federal Aviation Administration (FAA) AD 2000-15-52 Alternate Means of Compliance (AMOC) Statement for Trunnions 204-011-105-001 and 204-011-105-1038/7/2000
en Status Report on Medium Mast ASB UH-1H-II-00-01, Rev B8/18/2000
en Status Report on Medium Mast ASB UH-1H-II-00-01, Rev B9/1/2000
en Status Report on Medium Mast ASB UH-1H-II-00-01, Rev B3/20/2001
en Torque on Flight Control Bolts5/22/2001
en Introduction of Improved Bearing with Silver-Plated Steel Cage6/20/2001
en Status Report on Medium Helicopter Mast ASB UH-1H-II-00-01, Rev B11/29/2001
en Ultrasonic Inspection of 204-011-121-009/-121 M/R Grip3/18/2002
en Ultrasonic Inspection of 204-011-121-009/-121 M/R Grip4/9/2002
en Main Rotor Grip 204-011-121-005/-009-/-117/-121 Ultrasonic Inspection Courses9/30/2003
en P/N 214-070-300-001/-101 Internal Rescue Hoist Cable Cutter and Pyrotechnic Cartridge12/23/2003
en Main Rotor Grips 204-011-121-009, -117, and -1217/12/2004
en Main Rotor Drag Brace P/N 204-011-140-All3/29/2005
en Introduction of Grip Assembly P/N 204-011-121-1257/7/2008
A en Introduction of Grip Assembly P/N 204-011-121-1252/5/2009
en Diamond J Inc. Measured Gas Temperature (MGT) Indicator P/N 61000-0851/29/2009
en Applicability of UH-1-12-AMAM-03: Aft Crosstube Installation on a UH-1H-II7/24/2012
en Removal of Zinc Chromate Primer Stripes as an Overheat Condition Indication1/10/2013
en Engine Deck P/N 205-031-197-1837/11/2018
en Main Transmission Support Case Mounts, New Inspection Requirements8/31/2020
en Incorrect / Missing Parts Call-Out for Transmission Cooler Thermo Valve & O-Ring6/22/2023
Installation Instructions
NameRevisionLangSubjectDate
en 407 - Plus Power Kit2/17/2010
Maintenance & Overhaul Instruction Temporary Revisions
NameRevisionLangSubjectDate
en 47D-1, 47G, & 47G-211/1/2016
en 47H-111/1/2016
en 47J11/1/2016
en 47G-2A, 47G-2A-111/1/2016
en 47G-311/1/2016
en 47J11/1/2016
en 47G-2A/-2A-1, 47G-3, 47G-3B/-3B-1, 47G-3B2, 47G-3B-2A, 47G-4/-4A, 47G-5, 47G-5A & 47J-2/-2A11/4/1983
Maintenance & Overhaul Instructions
NameRevisionLangSubjectDate
10 en 204B6/24/2011
Maintenance Manual Supplement
NameRevisionLangSubjectDate
Iss 8 en 412EPX2/7/2025
Maintenance Manuals
NameRevisionLangSubjectDate
6 en 205A-15/28/2010
9 en 205A-17/5/2016
2 en 205B12/18/2007
15 en 206A/B Series6/2/2015
17 en 206A/B Series4/10/2020
5 en 206A/B Series7/31/2009
30 en 206L9/25/2009
35 en 206L2/29/2012
40 en 206L12/17/2017
41 en 206L6/25/2019
42 en 206L9/30/2022
43 en 206L3/20/2024
27 en 206L19/25/2009
32 en 206L12/29/2012
39 en 206L16/25/2019
40 en 206L19/30/2022
41 en 206L13/20/2024
11 en 206L39/25/2009
18 en 206L32/29/2012
24 en 206L35/24/2019
25 en 206L37/18/2019
26 en 206L39/30/2022
27 en 206L33/20/2024
15 en 206L42/29/2012
21 en 206L41/8/2015
24 en 206L47/18/2019
25 en 206L48/31/2021
26 en 206L49/30/2022
27 en 206L43/20/2024
8 en 206L49/25/2009
7 en 206L4T10/27/2009
13 en 2129/16/2010
16 en 21211/15/2018
20 en 2128/25/2021
9 en 214B Series5/5/2015
22 en 214ST5/14/1987
14 en 214ST10/2/2018
5 en 22212/15/2006
6 en 2229/12/2008
7 en 2229/9/2011
8 en 2222/10/2020
11 en 222U6/30/2020
7 en 222U12/15/2006
8 en 222U9/12/2008
9 en 222U9/9/2011
14 en 23012/15/2006
15 en 2309/12/2008
17 en 2309/2/2020
16 en 2309/9/2011
25 en 407 Series9/29/2008
47 en 407 Series5/2/2019
Iss 14 en 407 Series12/12/2023
27 en 412/412EP9/25/2018
30 en 412/412EP1/21/2021
31 en 412/412EP4/30/2021
32 en 412/412EP3/4/2022
11 en 4278/18/2009
12 en 42710/20/2009
13 en 4272/19/2010
14 en 4293/26/2013
23 en 4309/28/2023
19 en 43011/1/2012
Maintenance Planning Information
NameRevisionLangSubjectDate
en 4071/6/2020
Iss 11 en 4076/17/2025
Iss 3 en 4076/21/2021
Iss 4 en 4075/27/2022
Iss 5 en 4077/6/2022
Iss 9 en 4076/6/2024
Iss 2 en 40711/23/2020
en 4291/10/2019
Iss 10 en 4298/24/2023
Iss 11 en 4299/11/2023
Iss 12 en 42912/14/2023
Iss 13 en 4292/22/2024
Iss 14 en 4294/24/2024
Iss 15 en 4295/31/2024
Iss 2 en 42912/3/2019
Iss 4 en 4297/27/2020
Iss 5 en 4299/25/2020
Iss 6 en 4294/15/2021
Iss 10 en 5057/3/2019
Iss 13 en 50511/4/2020
Iss 14 en 5053/12/2021
Iss 15 en 5058/11/2021
Iss 16 en 5053/28/2022
Iss 20 en 5058/16/2023
Iss 21 en 50511/9/2023
Iss 22 en 5053/22/2024
Iss 23 en 50510/21/2024
Iss 24 en 5056/10/2025
Iss 9 en 5052/14/2019
Iss 5 en 4077/6/2022
Military Standards
NameRevisionLangSubjectDate
en Military Standard Inspection, Liquid Penetrant3/18/1980
en Military Standard Inspection, Liquid Penetrant11/29/1985
Operations Safety Notices
NameRevisionLangSubjectDate
en Main Rotor Hub Inboard Thrust Duplex Bearing 047-120-417-XXX, Identification of Thrust Side12/28/2009
en Engine-Driven Cooling Fan Disk Failures5/3/2010
en Importance of Proper Configuration and Clutch Engagement Procedure5/15/2014
en Proper Procedures to Ensure Safety of Throttle Linkage7/30/2014
en Failed Tail Rotor Hub Bolts P/N 47-641-052-312/12/1975
en Accomplishment of S.B. 47-77-18/31/1976
en Breakaway Fuel Vent Valve for Crashworthy Fuel System11/1/1977
en Airworthiness of Aircraft Parts4/21/1978
en New Tail Rotor Hub and Blades9/25/1978
en Tail Rotor Link Assemblies, P/N 47-641-172-5 which is Part of the New 206 Type Tail Rotor Assembly, P/N 47-641-17010/19/1979
en Replacement and Inspection of 47-642-102 Tail Rotor Blade Assemblies12/4/1979
en Retirement of Main Rotor Gimbal Rings, P/N 47-120-014-5, -6, -7, -9, -11, -13, -15, -17, -19 and -2112/4/1980
en Airworthiness of Fan Drive Gear Sets, P/N 47-620-497-1
en Main Rotor Blade Repair5/1/1984
en Accomplishment of ASB 47-85-12, Rev A6/2/1986
en Accomplishment of Service Bulletins 47-76-6 and 47-78-17/18/1986
en Airworthiness of Main Rotor Blade Assemblies, P/N 47-110-120-502/22/1989
en Main Rotor Mast 204-011-450-All Retirement Index Number (RIN) Calculation and Bell Helicopter Request for Information3/24/2000
en Inspection of Drive Link P/N 204-011-407-0019/4/2003
en Inspection of Rod End Bearing Assembly P/N 212-010-123-1011/10/2006
en FAA Unapproved Parts Notification 2006-000973/26/2007
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Main Rotor Hub Strap Pin P/N 204-012-104-001/-003/-005 Inspection Requirements8/6/2020
en Main Rotor Mast 204-011-450-All Retirement Index Number (RIN) Calculation and Bell Helicopter Request for Information3/24/2000
en Inspection of Tail Rotor Blades 212-010-750-All8/27/2002
en Inspection of Drive Link P/N 204-011-407-0019/4/2003
en 205A1/212/412/412CF Tail Rotor Pitch Link Inspection2/23/2004
en Inspection of Main Rotor Blades 204-012-001-All and 212-015-501-All2/22/2005
en Inspection of Rod End Bearing Assembly P/N 212-010-123-1011/10/2006
en FAA Unapproved Parts Notification 2006-000973/26/2007
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Tailboom Longerons Inspection Requirements6/14/2010
en Emergency (Push Out) Passenger Door Windows5/18/2012
en Full Flow Debris Monitor Installation4/14/2014
en Tail Rotor Control Tube 212-001-055-101 Found Cracked5/1/2015
en Main Rotor Hub Strap Pin P/N 204-012-104-001/-003/-005 Inspection Requirements8/6/2020
en Inboard Strap Fitting 212-010-103-101 Defect10/20/2023
en Main Servo Actuator 212-076-005-All, Lower Rod End Bearing4/20/2000
en Inspection of Tail Rotor Blades 212-010-750-All8/27/2002
en Inspection of Drive Link P/N 204-011-407-0019/4/2003
en Inspection of Main Rotor Blades 204-012-001-All and 212-015-501-All2/22/2005
en Inspection of Rod End Bearing Assembly P/N 212-010-123-1011/10/2006
en FAA Unapproved Parts Notification 2006-000973/26/2007
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Tailboom Longerons Inspection Requirements6/14/2010
en Emergency (Push Out) Passenger Door Windows5/18/2012
en Tail Rotor Control Tube 212-001-055-101 Found Cracked5/1/2015
en Main Rotor Blade 212-015-501-115 Found Cracked3/14/2016
en Main Rotor Hub Strap Pin P/N 204-012-104-001/-003/-005 Inspection Requirements8/6/2020
en Attaching Hardware Torque Check of Tail Rotor Disc Pack Coupling P/N 32721-15/31/2002
en Periodic Inspection of Tail Rotor Blades 206-016-201-XXX1/3/2003
en Maintenance and Inspection of 206-001-397-XXX Cyclic Support Assembly5/11/2010
en Inspection of Engine Inlet11/5/2013
en Enhanced Awareness of Loose or Broken Engine Compressor Split Line Bolts/Studs2/27/2018
en Rolls-Royce M250 Engines - Maintenance Warning - External Lines7/24/2019
A en Rolls-Royce M250 Engines - Maintenance Warning - External Lines9/8/2021
en Dart Aerospace Service Bulletin SB22-4 (Revision A), Emergency Float System Pull Cables2/27/2025
en Tail Rotor Blade Preflight Check5/16/2025
en Tail Rotor Blades, P/N 406-010-750-007 (Aluminum)12/4/1979
B en Repairs or Alterations Not Approved by Bell Helicopter3/9/2007
en Reminder of Tail Rotor Pitch Link Inspection ASB 206-87-398/19/1999
en Kaflex Main Driveshaft Tool3/13/2001
A en Attaching Hardware Torque Check of Tail Rotor Disc Pack Coupling P/N 32721-17/18/2002
en Periodic Inspection of Tail Rotor Blades 206-016-201-XXX1/3/2003
en Periodic Inspection of Tailboom Attachment Fittings P/N 206-032-409-001 and P/N 206-031-403-00511/24/2004
en Cyclic Controls System Rigging2/5/2008
en Maintenance and Inspection of 206-001-397-XXX Cyclic Support Assembly5/11/2010
en Maintenance and Inspection of 206-001-397-XXX Cyclic Support Assembly5/11/2010
en 206L Series Main Rotor Blades11/18/2011
en Inspection of Engine Inlet11/5/2013
en High Altitude Tail Rotor (HATR) Kit, Maintenance Practices10/21/2014
en Engine Mount Corrosion and Bearing Replacement1/21/2015
en High Altitude Tail Rotor Blade Exterior Check6/28/2017
en Enhanced Awareness of Loose or Broken Engine Compressor Split Line Bolts/Studs2/27/2018
en Rolls-Royce M250 Engines - Maintenance Warning - External Lines7/24/2019
A en Rolls-Royce M250 Engines - Maintenance Warning - External Lines9/8/2021
en Cyclic & Collective Flight Controls Rigging Requirements5/16/2024
en Dart Aerospace Service Bulletin SB22-4 (Revision A), Emergency Float System Pull Cables2/27/2025
en Tail Rotor Blade Preflight Check5/16/2025
en Tail Rotor Blades, P/N 406-010-750-007 (Aluminum)12/4/1979
en Reminder of Tail Rotor Pitch Link Inspection ASB 206L-87-488/19/1999
en Inspection of Rod End Bearing Assembly P/N 212-010-123-1011/10/2006
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Tailboom Longeron Inspection Requirements6/15/2010
en Tail Rotor Control Tube 212-001-055-101 Found Cracked5/11/2015
en Potential 5G C-Band Wireless Broadband Interference with Radio (Radar) Altimeter Equipment1/31/2022
en Main Rotor Mast 204-011-450-All Retirement Index Number (RIN) Calculation and Bell Helicopter Request for Information3/24/2000
en Main Servo Actuator 212-076-005-All, Lower Rod End Bearing4/20/2000
en Inspection of Engine Intake Fairing P/N 212-061-207-023/-0252/12/2001
en Inspection of Tail Rotor Blades 212-010-750-All8/27/2002
en Inspection of Drive Link P/N 204-011-407-0019/4/2003
en 205A1/212/412/412CF Tail Rotor Pitch Link Inspection2/23/2004
en Inspection of Main Rotor Blades 204-012-001-All and 212-015-501-All2/22/2005
en Inspection of Rod End Bearing Assembly P/N 212-010-123-1011/10/2006
en Handles 209-070-280-005/007/101/103, Mfg. P/N PH-108, PH-109, PH-116 & PH-117 Respectively2/21/2006
A en Handles 209-070-280-005/007/101/103, Mfg. P/N PH-108, PH-109, PH-116 & PH-117 Respectively6/28/2006
en Collective Stick Tube 212-001-181-0015/16/2006
en FAA Unapproved Parts Notification 2006-000973/26/2007
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Tailboom Longerons Inspection Requirements6/14/2010
en Emergency (Push Out) Passenger Door Windows5/18/2012
en Full Flow Debris Monitor Installation4/14/2014
en Tail Rotor Control Tube 212-001-055-101 Found Cracked5/1/2015
en Main Rotor Blade 212-015-501-115 Found Cracked3/14/2016
en Main Rotor Hub Strap Pin P/N 204-012-104-001/-003/-005 Inspection Requirements8/6/2020
en P/N 214-015-750 Tail Rotor Blade Tip Closure12/16/2002
en P/N 214-030-606-005 Pylon Support Spindle Assembly10/11/2006
en Notice of Common Part Failure6/21/1999
en Starter Engine Jaw Coupling Installation5/9/2008
en Tail Rotor Crosshead Duplex Bearing and Counterweight Installation2/7/2022
en Notice of Common Part Failure6/21/1999
en Heated and Heated Bird-Proof Windshield Assemblies P/N 222-331-101-101/102 and 222-031-105-111/1128/30/2000
en Transmission Top Case P/N 222-040-061-101 and 10511/30/2001
en Periodic Inspection of Tail Rotor Blades 222-016-001-All10/16/2003
en Tail Rotor Blades 222-016-001-131 and -13511/15/2004
en Emergency Procedures in the Event of an LTS101 Series Engine Power Turbine Governor (PTG) Failure4/12/2012
en Fuel System Vent Tubes P/N 222-066-605-10110/15/1999
en Heated and Heated Bird-Proof Windshield Assemblies P/N 222-331-101-101/102 and 222-031-105-111/1128/23/2000
en Transmission Top Case P/N 222-040-061-101 and -10511/30/2001
en Periodic Inspection of Tail Rotor Blades 222-016-001-All10/16/2003
en Tail Rotor Blades 222-016-001-13111/15/2004
en Emergency Procedures in the Event of an LTS101 Series Engine Power Turbine Governor (PTG) Failure4/12/2012
en Fuel System Vent Tubes P/N 222-066-605-10110/15/1999
en Heated and Heated Bird-Proof Windshield Assemblies P/N 222-331-101-101/102 and 222-031-105-111/1128/23/2000
en Transmission Top Case P/N 222-040-061-10511/30/2001
en Periodic Inspection of Tail Rotor Blades 222-016-001-All10/16/2003
en Tail Rotor Blades 222-016-001-13111/15/2004
en Enhanced Awareness of Loose or Broken Engine Compressor Split Line Bolts/Studs2/27/2018
en Fuel System Vent Tubes10/15/1999
en Kaflex Main Driveshaft Tool11/10/2000
en Tail Rotor Gearbox Torque Check5/31/2001
en Water Intrusion in Pitot System - 407 Airspeed Actuated Pedal Stop6/18/2001
en Servicing of Emergency Float Kit 407-706-0081/18/2002
en Tail Rotor Hub and Blades Assembly Dynamic Balance7/18/2002
en Bell 407 Mast2/28/2003
A en Bell 407 Tail Rotor Driveshaft Segment Assemblies5/2/2003
en Aerobatic Maneuvers7/23/2004
en Maintenance and Inspection of 206-001-397-XXX Cyclic Support Assembly5/11/2010
en Airframe Fuel Filter Hose Maintenance Procedures6/26/2013
en Inspection of Engine Inlet11/5/2013
en SFIM Autopilot Installation per STC #SR00790NY3/18/2015
en Swashplate Drive Link Assembly Installation6/14/2016
en Tail Rotor Blade Preflight Check6/28/2017
en Enhanced Awareness of Loose or Broken Engine Compressor Split Line Bolts/Studs2/27/2018
en Rolls-Royce M250 Engines - Maintenance Warning - External Lines7/24/2019
A en Rolls-Royce M250 Engines - Maintenance Warning - External Lines9/8/2021
en Pilot Cyclic Control Stick Balance Verification10/6/2021
en AFCS Uncommanded Pitch Up with Loss of SBAS Signal6/27/2024
en Dart Aerospace Service Bulletin SB22-4 (Revision A), Emergency Float System Pull Cables2/27/2025
en Main Servo Actuator 212-076-005-All, Lower Rod End Bearing4/20/2000
en Inspection of Engine Intake Fairing P/N 212-061-207-023/-0252/12/2001
en Inspection of Tail Rotor Blades 212-010-750-All8/27/2002
en 205A1/212/412/412CF Tail Rotor Pitch Link Inspection2/23/2004
en Handles 209-070-280-005/007/101/103, Mfg. P/N PH-108, PH-109, PH-116 & PH-117 Respectively2/21/2006
A en Handles 209-070-280-005/007/101/103, Mfg. P/N PH-108, PH-109, PH-116 & PH-117 Respectively6/28/2006
en Collective Stick Tube 212-001-181-0015/16/2006
en FAA Unapproved Parts Notification 2006-000973/26/2007
en Forward and Aft Crosstube Failure4/13/2007
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Landing Gear Maintenance and Handling8/10/2007
en Reported Fracture of Dart Aerospace Ltd. Aft Crosstube D412-664-20311/6/2007
en Standby Attitude Indicator Emergency Power Supply4/7/2009
en Main Rotor Hub Hardware Corrosion Prevention Compound Application11/10/2009
en Attitude Heading Reference System (AHRS) Disconnects1/4/2010
en High Landing Gear Aft Crosstube P/N 412-321-1045/6/2010
en Tailboom Longerons Inspection Requirements6/14/2010
en Reported Fracture of Dart Aerospace Ltd. Aft Crosstube D412-664-203 and Subsequent Landing Life Limit6/27/2011
en Emergency (Push Out) Passenger Door Windows5/18/2012
en Full Flow Debris Monitor Installation4/14/2014
en Tail Rotor Control Tube 212-001-055-101 Found Cracked5/1/2015
en Large Forward Cyclic Displacement Inducing Vertical One-Per-Rev Vibration on the Ground12/19/2018
en Main Transmission Loss of Lubrication Incident6/21/2023
en Dart Aerospace Service Bulletin SB20222-02, Revision A2/27/2025
en Inspection of Engine Intake Fairing P/N 212-061-207-023/-0252/12/2001
en Inspection of Tail Rotor Blades 212-010-750-All8/27/2002
en 205A1/212/412/412CF Tail Rotor Pitch Link Inspection2/23/2004
en Collective Stick Tube 212-001-181-0015/16/2006
en FAA Unapproved Parts Notification 2006-000973/26/2007
en Forward and Aft Crosstube Failure4/13/2007
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Tailboom Longerons Inspection Requirements6/14/2010
en Emergency (Push Out) Passenger Door Windows5/18/2012
en Full Flow Debris Monitor Installation4/14/2014
en Tail Rotor Control Tube 212-001-055-101 Found Cracked5/1/2015
en Large Forward Cyclic Displacement Inducing Vertical One-Per-Rev Vibration on the Ground12/19/2018
en Dart Aerospace Service Bulletin SB20222-02, Revision A2/27/2025
en Collective Stick Tube 212-001-181-0015/16/2006
en FAA Unapproved Parts Notification 2006-000973/26/2007
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Water Intrusion in Pitot System, and Effect on Pedal Restrictor Control System6/8/2001
en Swashplate Drive Link Assembly Installation6/14/2016
en Manual Emergency Float Inflation Switch4/30/2014
en Emergency Procedures in the Event of a Landing Gear Unsafe Indication2/6/2015
en Tail Rotor Mast Nut Torque Check11/29/2017
en 2 Year Flight Controls Detailed Inspection11/21/2019
en Heated and Heated Bird-Proof Windshield Assemblies P/N 222-331-101-101/102 and 222-031-105-111/1128/23/2000
en Tail Rotor Gearbox Output Shaft Splines Wear6/2/2000
en Periodic Inspection of Tail Rotor Blades 222-016-001-All10/16/2003
en Tail Rotor Blades 222-016-001-13111/15/2004
en Enhanced Awareness of Loose or Broken Engine Compressor Split Line Bolts/Studs2/27/2018
en Tail Rotor Crosshead P/N 222-012.726-0013/20/1998
en Fuel System Vent Tubes P/N 222-066-605-10110/15/1999
en Exhaust Pipe Preflight Check1/19/2018
en Truss Corrosion Preventive Maintenance Program4/23/2019
en Fan Shaft & Air Conditioning Drive Pulley Splines Excessive Wear6/2/2020
en Dart Aerospace Service Bulletin SB22-4 (Revision A), Emergency Float System Pull Cables2/27/2025
en Tail Rotor Blade Preflight Check5/16/2025
en Windshield Cracks5/21/2025
en Bogus Parts Tail Rotor Grips5/2/2002
en Correct Procedure for Torquing Fasteners11/22/2002
en Cyclic Stick Grip Assembly9/21/2004
en Paint Application on Helicopter Faying Surfaces4/17/2006
en NAS 1291-7 and -8 Nut, Confirmation of Condition Upon Installation7/20/2006
en Bearings in Flight Controls4/7/2009
en Onboard Systems International Alert Service Letter Document No. 159-027-0011/16/2009
en Honeywell Bendix/King Discrepant Databases for KLN 35A/KLN 88/KLN 89/KLN 89B/KLN 90/KLN 90A/KLN 90B/KLN 94/KLX 100/KLX 135/KLX 135A/KLN 9001/18/2010
en Use of Specified Hardware12/13/2010
en NAS1291 Nuts and NAS626 Bolts2/11/2011
A en NAS1291 Nuts and NAS626 Bolts9/16/2011
en Defective Grease Fittings NAS516-1A5/10/2011
en Personnel Injuries While Working on Helicopters8/20/2012
en Fluid Lines Fretting Damage12/17/2013
en Lines or Cables Extending from Helicopter1/14/2014
en Helicopter Operations with Query: Field Elevation (QFE) Altimeter Settings6/7/2016
en Main Rotor Pitch Link Assembly10/12/2017
en Cockpit and Cabin Passenger Safety7/7/2020
en Potential 5G C-Band Wireless Broadband Interference with Radio (Radar) Altimeter Equipment1/20/2022
A en Potential 5G C-Band Wireless Broadband Interference with Radio (Radar) Altimeter Equipment7/27/2023
en Potential 5G C-Band Wireless Broadband Interference with Radio (Radar) Altimeter Equipment7/27/2023
en Torquing of Component Attaching Hardware & Torque Lacquer Application5/16/2024
A en Non-Conforming NAS9926-4L Nuts8/19/2024
en Maintenance/Overhaul Procedures10/10/2002
en FAA Unapproved Parts Notification 2006-000973/26/2007
en FAA Unapproved Parts Notification 2007-000897/5/2007
en Potential 5G C-Band Wireless Broadband Interference with Radio (Radar) Altimeter Equipment1/31/2022
en Inspection of Tail Rotor Blades 212-010-750-All8/27/2002
en Inspection of Drive Link P/N 204-011-407-0019/30/2003
en UH-1H-II Tail Rotor Pitch Link Inspection3/3/2004
en Inspection of Rod End Bearing Assembly P/N 212-010-123-1011/10/2006
en FAA Unapproved Parts Notification 2006-000973/22/2007
en Unapproved Parts Notification 2007-000897/5/2007
en Cracks in Primary Structure11/20/2007
en Tailboom Longeron Inspection Requirements6/15/2010
en Tail Rotor Control Tube 212-001-055-101 Found Cracked5/11/2015
en Main Rotor Hub Strap Pin P/N 204-012-104-001/-003/-005 Inspection Requirements6/5/2020
en Potential 5G C-Band Wireless Broadband Interference with Radio (Radar) Altimeter Equipment1/31/2022
Publication Indexes
NameRevisionLangSubjectDate
en 471/1/2008
en 477/1/1984
en 471/1/2008
en 204B9/15/2011
en 204B10/4/2011
en 204B9/19/2011
en 204B9/15/2011
en 201A19/15/2011
en 201A110/4/2011
en 201A19/19/2011
en 201A19/15/2011
en 205B1/18/2012
en 205B10/4/2011
en 205B9/19/2011
en 205B9/15/2011
en 206A/B/B39/15/2011
en 206A/B/B310/4/2011
en 206A/B/B39/19/2011
en 206A/B/B32/6/2012
en 206L/L1/L3/L49/15/2011
en 206L/L1/L3/L410/4/2011
en 206L/L1/L3/L412/8/2011
en 206L/L1/L3/L42/7/2012
en 2121/18/2012
en 21210/4/2011
en 2129/19/2011
en 2129/15/2011
en 214B/B11/10/2012
en 214 Series5/23/2022
en 214B/B19/19/2011
en 214B/B112/9/2011
en 214ST9/15/2011
en 214ST5/23/2022
en 214ST5/17/2022
en 214ST12/9/2011
en 222/B12/13/2011
en 222/B10/4/2011
en 222/B9/19/2011
en 222/B9/15/2011
en 222U12/13/2011
en 222U10/4/2011
en 222U9/19/2011
en 222U12/8/2011
en 23012/13/2011
en 23010/4/2011
en 2309/19/2011
en 2309/15/2011
en 4072/14/2012
en 40711/16/2011
en 4079/19/2011
en 4072/14/2012
en 4121/26/2012
en 41210/4/2011
en 4129/19/2011
en 41211/16/2011
en 4279/15/2011
en 42710/4/2011
en 4279/19/2011
en 4279/15/2011
en 4291/4/2012
en 42910/4/2011
en 4299/19/2011
en 42912/15/2011
en 43012/13/2011
en 43010/4/2011
en 4309/19/2011
en 4309/15/2011
en ALL3/1/2004
Service Instructions
NameRevisionLangSubjectDate
revised en Main Rotor Blade Inspection System Kit5/12/1978
revised en Main Rotor Blade Inspection System Kit5/12/1978
revised en Main Rotor Blade Inspection System Kit5/12/1978
revised en Main Rotor Blade Inspection System Kit5/12/1978
1 en Engine Upgrade Kit6/8/2010
Service Letters
NameRevisionLangSubjectDate
en Modification of Synchronized Elevator Control Pulley Bracket, P/N 47-325-055-32/24/1959
en Inspection of Flexible Hose at Hydraulic Cylinders for Correct Length10/1/1959
en Rework of 47J Synchronized Elevator5/31/1960
Structural Repair Manuals
NameRevisionLangSubjectDate
3 en 206 Series12/18/2012
Technical Bulletins
NameRevisionLangSubjectDate
en Adjustment of Stabilizer Bar Assemblies and Alignment of Fore and Aft and Lateral Control Power Cylinders12/19/1973
en Introduction of Main Rotor Grips 047-120-252-115/047-120-135-107 and Adapter 047-120-183-1037/17/2001
en Increase in Retirement Life of Elevator Assembly & Elevator Horn Assembly4/14/2000
en Introduction of Swashplate and Support Assembly, Bolt 204-011-463-10710/20/2003
en Mast Assembly P/N 204-040-366-015 (with Bearing P/N 212-040-136-001 Installed) and Mast Assemblies 204-040-366-017, -021, Increase in Time-Between-Overhaul (TBO)10/29/2003
en Modification of Transmission Oil Pump 212-040-184-0016/28/2004
en Bearing and Liner Assemblies P/N 204-010-433-001 and P/N 204-011-443-001: Installation Improvements5/11/2005
en Replacement of Fin Spar Cap 212-030-447-001/-1015/19/2000
en Modification of Forward Crosstube8/4/2000
en Improved Tail Rotor Pitch Links1/31/2001
en Introduction of Swashplate and Support Assembly, Bolt 204-011-463-10710/20/2003
en Modification of Transmission Oil Pump 212-040-184-0016/28/2004
en Chip Detector Indicator, Replacement for Spares6/7/2004
en Inspection of Main Rotor Flight Control System Bolts10/19/2004
en Bearing and Liner Assemblies P/N 204-010-433-001 and P/N 204-011-443-001: Installation Improvements5/11/2005
en Tailboom Bulkhead Reinforcement10/10/2005
A en Tailboom Bulkhead Reinforcement12/14/2007
B en Tailboom Bulkhead Reinforcement12/12/2016
A en Improved Baggage Compartment Door Seal6/22/2007
en Vertical Fin Cover Hinge Pin Improved Installation7/21/2006
en Tailboom Assemblies P/N 205-032-802-003 through -051 & 212-030-100-081 through -107, Modification for Use on All 205A/A-1 Helicopters1/16/2008
en Reinforcement of Upper Crew Door Hinge Structure2/26/2008
en Fuel Overflow Deflector Upgrade5/13/2008
en Prevention of Tail Rotor Gearbox Excluder Housing Leak4/28/2009
en Prevention of Tail Rotor Gearbox Input Quill Leak6/5/2015
en One Time Inspection of Forward Cross Tube Assemblies P/N 05-050-400-5, -13, -37, -39 -701 and -703 which Have Attained 1000 Hours Service Time9/13/1977
en Landing Gear, One Time Inspection of Aft Cross Tube Assemblies P/N 205-050-400-7, -29, -35 and -7053/8/1978
A en Main Beam, P/N 205-030-163 and P/N 205-030-164, Rivet Replacement2/16/1980
A en Replacement of Upper Honeycomb Panel, Tailboom Baggage Compartment, with Sheetmetal Skin3/19/2009
en Improved Tail Rotor Pitch Links1/31/2001
en Lower Nose Doors P/N 212-030-217-011 & 212-030-205-001 and Seal Replacement3/26/2003
en Introduction of Transmission Oil Filter Assembly P/N 204-040-760-1138/27/2003
en Introduction of Swashplate and Support Assembly, Bolt 204-011-463-10710/20/2003
en Engine to Transmission (Main Driveshaft) Alignment Procedure12/1/2003
en Modification of Transmission Oil Pump 212-040-184-0015/28/2004
en Bearing and Liner Assemblies P/N 204-010-433-001 and P/N 204-011-443-001: Installation Improvements5/11/2005
en Tailboom Bulkhead Reinforcement10/10/2005
A en Tailboom Bulkhead Reinforcement12/14/2007
B en Tailboom Bulkhead Reinforcement12/12/2016
A en Improved Baggage Compartment Door Seal6/22/2007
en Vertical Fin Cover Hinge Pin Improved Installation7/21/2006
en Reinforcement of Upper Crew Door Hinge Structure2/26/2008
en Fuel Overflow Deflector Upgrade5/13/2008
en Prevention of Tail Rotor Gearbox Excluder Housing Leak4/28/2009
en Prevention of Tail Rotor Gearbox Input Quill Leak6/5/2015
en Swashplate and Support Assembly, 206-010-450-All, Upgrade to -1299/1/2000
A en Swashplate and Support Assembly, 206-010-450-All, Upgrade to -12911/10/2010
en Modification of Emergency Lightweight Float Kit Inspection & Overhaul Schedule8/18/2000
en Installation of Drag Pin Assembly 206-031-633-101 Featuring a Slotted Entry Type Bearing11/16/2000
en Introduction of Tail Rotor Gearbox Bearing 206-040-410-10312/22/2000
en Upgrade and Configuration of Freewheel Assembly 206-040-270-All4/6/2001
A en Introduction of Transmission Oil Pump Seal 38-79004-1042-210/9/2002
B en Introduction of Transmission Oil Pump Seal 38-79004-1042-24/11/2005
en Introduction of Aeronautical Accessories Inc. (AAI) Landing Gear Assemblies and Parts as Alternates to BHT Assemblies and Parts11/14/2001
en Introduction of Transmission Input Pinion Stopper 14-141K12/6/2002
en Transmission Assembly 206-040-002-115/ -117 Interim Inspection Interval Increase6/2/2004
A en Transmission Assembly 206-040-002-115/ -117 Interim Inspection Interval Increase3/27/2012
en Introduction of Improved Tail Rotor Gearbox Input Seal P/N 206-340-206-1018/18/2004
A en Introduction of Improved Tail Rotor Gearbox Input Seal P/N 206-340-206-10112/7/2005
en Addition of Tail Rotor Controls Anti-Chaffing8/11/2004
en Improvement of Airframe, Aft Crosstube Support Structure12/3/2004
en Drain Holes, Air Inlet Cowl Assembly Floor Panel, - Modification2/18/2005
en Introduction of Improved Oil Pump Seal, 38-79004-1045-24/11/2005
en Introduction of Sleeve Assembly 206-010-454-11310/31/2005
en Introduction of Riveted Tail Rotor Driveshaft Segment 206-040-385-105/-109 and Riveted Aft Short Shaft 206-040-383-1014/11/2006
B en Introduction of Riveted Tail Rotor Driveshaft Segment 206-040-385-105/-109 and Riveted Aft Short Shaft 206-040-383-1019/7/2007
en Improved Corrosion Resistance of Baggage Floor Panel9/25/2006
en Installation of 206-070-626-035 'ARM' and 206-070-626-023 'Engine Relight' Decals10/13/2006
en Introduction of Transmission Oil Pump 206-040-184-10110/17/2006
en Improvement of Main Rotor Mast Nut Installation Procedure5/22/2007
en Replacement of Landing Light Relays6/20/2007
en Introduction of Adjustable Pedal Assembly 407-001-012-10110/22/2007
en Introduction of Contact Enhancer Stabilant 221/8/2008
en Introduction of Transmission Oil Pump P/N 206-040-184-001/-101 Bearing Replacement Procedure4/8/2008
en Inspection of Spanner Nut P/N MS17224211/23/2009
A en Inspection of Spanner Nut P/N MS17224212/2/2009
en Introduction of Machined Aft Lower Fuselage-to-Tailboom Attachment Longerons 407-030-014-101 and 407-030-014-1022/23/2010
en Introduction of Main Rotor Blade P/N 206-010-200-145, /-149, /-151, /-1536/13/2011
A en Introduction of Main Rotor Blade P/N 206-010-200-145, /-149, /-151, /-1538/1/2011
en Introduction of Davtron Digital Clock M800-5-BATT11/13/2012
en Introduction of Improved Upper Left Longeron/Fitting Assembly P/N 206-031-314-223S and Aft Fuselage Bulkhead 407-030-027-1052/2/2012
A en Introduction of Improved Upper Left Longeron/Fitting Assembly P/N 206-031-314-223S and Aft Fuselage Bulkhead 407-030-027-1052/20/2014
en Reissue of Airframe Production Shim Records4/24/2014
en Removal of 206-010-003-001 Main Rotor Cone Set with Dot Peened Part Numbers on the Load Bearing Surface9/24/2012
en Upgrade of Fuel Transfer Pump and Centrifugal Boost Pump Canister10/30/2012
en Installation of Boost Pump Housing Ground Path to Airframe10/31/2012
en Engine Legs Installation Improvement4/26/2013
A en Engine Legs Installation Improvement10/14/2014
en Modification of Tail Rotor Gearbox 3 Piece Fairing5/24/2013
A en Modification of Tail Rotor Gearbox 3 Piece Fairing7/11/2013
en Introduction of Alternate Lubricant (C-172) for Main and Tail Rotor Components8/23/2013
A en Introduction of Alternate Lubricant (C-172) for Main and Tail Rotor Components9/23/2014
B en Introduction of Alternate Lubricant (C-172) for Main and Tail Rotor Components9/23/2017
en Reissue of Airframe Production Shim Records4/24/2014
en Introduction of Improved Seat Retaining Clips and Upgrade of Existing Seat Retaining Clips System1/5/2015
en Introduction of Seat Back, Seat Bottom Cushion Reupholstering1/12/2015
en Chem-Milled Battery Door and Piano Hinge Assembly 206-033-177-135S, Retrofit of2/7/2018
en Linear Actuator Electrical Connector Cover Damage Limits and Repair Instructions, Introduction of2/2/2018
en Fuel Filter Assembly 222-366-621-103, Upgrade of8/29/2023
en Segmented Tail Rotor Driveshafts, Retrofit of7/14/2023
en Lubricant Conversion Procedure from Thixo Syn (C-172) to Mobilgrease 28 (C-001), without Disassembly, Introduction of12/19/2024
A en Lubricant Conversion Procedure from THIXO SYN (C-172) to MOBILGREASE 28 (C-001), without Disassembly, Introduction of 3/21/2025
A en Modification of Tail Rotor Drive Shaft Cover P/N 206-031-408-13 and -25 to Accept Spring Loaded Bearing Hangers 206-040-338-510/20/1976
en Model 206A/B Tail Rotor Drive Shaft Clamp Type Bearing Hangers with Shims, P/N 206-040-345-5, 206-040- 346-5 and 206-040-338-l6/20/1977
B en Configuration of Tail Rotor Hub and Blade Assemblies12/17/1978
B en Engine Acousti Mounts Removal of4/24/2006
D en Engine Acousti Mounts Removal of7/31/2007
A en Removal of Anti-Torque Control System Hydraulic Boost5/21/2014
A en Installation of Fuel Cell Vent Decal1/20/2010
en Introduction of Transmission Input Adapter Modification and Packing A10710.V7205/17/1999
A en Introduction of Transmission Input Adapter Modification and Packing A10710.V7204/5/2005
en Upgrade and Configuration of Tail Rotor Gearbox Assemblies 206-040-400-All and 206-040-402-All10/1/1999
A en Upgrade and Configuration of Tail Rotor Gearbox Assemblies 206-040-400-All and 206-040-402-All2/1/2006
en Introduction of New Swashplate Seal 206-310-400-10110/1/1999
A en Introduction of Swashplate Drive Assembly; Improved Bushing 206-010-801-101 and Shimming Procedure7/14/2000
en Introduction of High Altitude Kit Tail Rotor Balancing Improvement3/1/2000
en Swashplate and Support Assembly, 206-010-450-All, Upgrade to -129 or -1239/1/2000
A en Swashplate and Support Assembly, 206-010-450-All, Upgrade to -129 or -12311/10/2010
en Modification of Emergency Lightweight Float Kit Inspection & Overhaul Schedule8/18/2000
A en Installation of Horizontal Stabilizer Supports 206-023-131-All1/12/2001
B en Installation of Horizontal Stabilizer Supports 206-023-131-All10/27/2014
en Introduction of Driveshaft, Engine-to-Transmission, P/N 206-340-300-1052/23/2001
en Upgrade and Configuration of Freewheel Assembly 206-040-270-All4/6/2001
A en Upgrade and Configuration of Freewheel Assembly 206-040-270-All10/19/2007
en Introduction of Transmission Oil Pump Seal 38-79004-1042-24/30/2001
A en Introduction of Transmission Oil Pump Seal 38-79004-1042-24/11/2005
en Introduction of New Airspeed Limitations Placard8/27/2003
A en Introduction of Riveted Tail Rotor Driveshaft Segment 206-040-385-101 and Riveted Aft Short Shaft 206-040-383-1011/22/2003
en Introduction of Forward Freewheel Seal 407-340-102-101 and Cone Set 407-040-548-1011/7/2002
en Introduction of Transmission Input Pinion Stopper 14-141K12/6/2002
en Introduction of Tach-Generator 206-375-202-101 and Adapter 407-340-108-1015/21/2003
en Introduction of Exhaust Duct Assembly 206-064-300-1013/5/2004
en Extension of Transmission Assemblies 206-040-004-107 and /-115 Interim Inspection Interval6/2/2004
en Addition of Tail Rotor Controls Anti-Chaffing8/11/2004
en Introduction of Improved Tail Rotor Gearbox Input Seal P/N 206-340-206-1018/18/2004
A en Introduction of Improved Tail Rotor Gearbox Input Seal P/N 206-340-206-10112/7/2005
en Drain Holes, Air Inlet Cowl Assembly Floor Panel, Modification11/29/2004
en Improvement of Freewheel Aft Seal Lubrication12/6/2004
en Introduction of Transmission Oil Pump Seal, 38-79004-1045-24/11/2005
en Introduction of Improved Freewheel Aft Seal P/N 209-340-265-1037/26/2005
A en Introduction of Improved Freewheel Aft Seal P/N 209-340-265-1037/19/2007
en Tailboom Assembly 206-033-004-All, Modification for Increased Interchangeability8/16/2005
en Introduction of Sleeve Assembly 206-010-454-11310/31/2005
en Improved Corrosion Resistance of Baggage Floor Panel9/25/2006
en Improvement of Main Rotor Mast Nut Installation Procedure5/22/2007
en Configuration of Fan Assembly 206-040-370-All7/3/2007
en Replacement of Landing Light Relays7/19/2007
en Introduction of Improved Upper Left Longeron / Fitting Assembly 206-031-314-217B or -233B and Aft Fuselage Bulkhead 407-030-027-10310/8/2007
A en Introduction of Improved Upper Left Longeron / Fitting Assembly 206-031-314-217B or -233B and Aft Fuselage Bulkhead 407-030-027-1037/1/2014
en Introduction of Adjustable Pedal Assembly 407-001-012-10110/22/2007
en Introduction of Contact Enhancer Stabilant 221/8/2008
en Transmission 206-040-004-107 and -111 Conversion to 206-040-004-1151/14/2008
A en Transmission 206-040-004-107 and -111 Conversion to 206-040-004-1158/23/2012
B en Transmission 206-040-004-107 and -111 Conversion to 206-040-004-11510/9/2013
en Removal of Electronic Engine N2 Overspeed Protection System2/22/2008
en Introduction of Airspeed Limitation Placards2/22/2008
en Introduction of Transmission Oil Pumps P/N 206-040-190-005 and 406-340-100-101 Bearing Replacement Procedure4/25/2008
en 206-705-420-101 Airframe Modification for Upgrade6/12/2009
A en 206-705-420-101 Airframe Modification for Upgrade7/14/2009
B en 206-705-420-101 Airframe Modification for Upgrade8/23/2012
C en 206-705-420-101 Airframe Modification for Upgrade4/30/2013
en Modification of 5 Volt Lighting System6/15/2009
en Tach Generator 206-375-202-101 and 206-076-373-001, Splines Inspection8/17/2009
en Introduction of Machined Aft Lower Fuselage-to-Tailboom Attachment Longerons 407-030-014-101 and 407-030-014-1029/24/2009
en Introduction of Pitch Horn 406-012-108-101 Recurring Torque Check11/17/2009
en Inspection of Spanner Nut P/N MS17224211/23/2009
en Configuration of Tail Rotor Hub and Tail Rotor Hub Blades Assembly, P/N 206-011-81011/24/2009
en Introduction of Davtron Digital Clock M800-5-BATT2/13/2012
en Reissue of Airframe Production Shim Records2/6/2012
en Replacement of Fuel Hoses11/27/2012
en Introduction of Starter-Generator 206-062-200-1415/11/2012
en Introduction of Litter Door Adjustable Hinge7/3/2012
en Modification of Auxiliary Fins Assembly P/N 206-023-126-101/-102/-111/-1128/23/2012
A en Modification of Auxiliary Fins Assembly P/N 206-023-126-101/-102/-111/-1123/1/2018
en Upgrade of Fuel Transfer Pump and Centrifugal Boost Pump Canister10/30/2012
en Introduction of Alternate Lubricant (C-172) for Main and Tail Rotor Components8/23/2013
A en Introduction of Alternate Lubricant (C-172) for Main and Tail Rotor Components9/23/2014
B en Introduction of Alternate Lubricant (C-172) for Main and Tail Rotor Components9/23/2017
en Modification of the Composite Induction Cowl 407-064-004-101 to Eliminate Interference with the Snow Deflectors1/8/2014
en Addition of Holes in Supports 206-033-311-017, -018 to Ease the Removal/Installation of the Tailbooom Assembly2/25/2014
en Removal of Engine Aft Combustion Drain Valve Assembly10/19/2015
en Rework or Replacement of Carbon Fiber Inlet Cowling 407-064-004-101 / - 103, Nutplates 90-104CXX-X9/17/2015
en Chem-Milled Battery Door and Piano Hinge Assembly 206-033-177-135S, Retrofit of2/7/2018
en Hydraulic Fluid Conversion from MILPRF-5606 to MIL-PRF-8725712/14/2016
en Linear Actuator Electrical Connector Cover Damage Limits and Repair Instructions, Introduction of2/2/2018
en Composite Inlet Cowling, Retrofit of6/28/2018
en Fuel Filter Assembly 222-366-621-103, Upgrade of8/29/2023
en Snow Deflector, Modification of6/13/2023
en Lubricant Conversion Procedure from Thixo Syn (C-172) to Mobilgrease 28 (C-001), without Disassembly, Introduction of12/19/2024
A en Lubricant Conversion Procedure from THIXO SYN (C-172) to MOBILGREASE 28 (C-001), without Disassembly, Introduction of 3/21/2025
en Configuration of Tail Rotor Hub and Blade Assemblies9/28/1979
A en Configuration of Tail Rotor Hub and Blade Assemblies11/24/2009
en Emergency Flotation Equipment Inflation Valve Assembly, P/N 206-073-915-005, Modification to Valve Assembly, P/N 206-073-915-1016/29/1982
B en Configuration of Tail Rotor Hub and Tail Rotor Hub and Blade Assembly, P/N 206-011-81011/24/2009
A en Installation of Fuel Cell Vent Decal1/20/2010
A en Introduction of Transmission Input Adapter Modification and Packing A10710.V7204/5/2005
A en Upgrade and Configuration of Tail Rotor Gearbox 206-040-402-All7/26/2005
en Introduction of New Swashplate Seal 206-310-400-10110/1/1999
A en Introduction of Swashplate Drive Assembly Improved Bushing 206-010-801-101 and Shimming Procedure7/14/2000
en Inspection and Modification of Cyclic and Collective Jackshafts6/30/2000
en Modification of Forward Crosstube8/4/2000
A en Replacement of Fin Spar Cap 212-030-125-001 & 212-030-447-001/-1014/23/2001
en Improved Tail Rotor Pitch Links1/31/2001
en Introduction of Engine Power Turbine Governor Lever Re-Indexing4/16/2001
en Introduction of Improved Engine Torque Transmitting System Benz Model 800-00019/7/2001
en Introduction of Transmission Oil Cooler Lines P/N 412-040-243-101 & 412-040-244-10112/13/2002
A en Replacement of Landing Light Mechanical Relay Assembly with a Solid-State Switch Mounted on a Printed Wiring Board4/23/2003
en Lower Nose Doors P/N 212-030-217-011 & 212-030-205-001 and Seal Replacement3/26/2003
en Modification of Transmission Debris Collector Assembly P/N 212-040-146-001 to -101FM5/16/2003
en Introduction of Transmission Oil Filter Assembly P/N 204-040-760-1138/27/2003
en Introduction of Swashplate and Support Assembly, Bolt 204-011-463-10710/20/2003
en AFCS Indicators, Replacement for Spares1/28/2004
en Oil Drain Valve P/N 209-062-010-001, Powerplant Accessory Gearbox, Improved Security of Screws2/16/2004
en Intake Screen Improvements6/15/2004
en Modification of Transmission Oil Pump 212-040-184-0016/28/2004
en Heated Windshield Indicators, Replacement for Spares8/25/2004
en New Chip Detector Interface Problem with Master Caution Panel9/13/2004
en Bearing and Liner Assemblies P/N 204-010-433-001 and P/N 204-011-443-001: Installation Improvements5/11/2005
en Tailboom Bulkhead Reinforcement10/10/2005
A en Tailboom Bulkhead Reinforcement12/14/2007
B en Tailboom Bulkhead Reinforcement12/20/2016
A en Improved Baggage Compartment Door Seal6/22/2007
en Installation of Missing Rigging Rivets6/13/2006
en Vertical Fin Cover Hinge Pin Improved Installation7/21/2006
en Center Engine Deck Modification for Use on Other Aircraft10/18/2006
en Power Section Case Drain Fitting Standardization3/8/2007
en Reinforcement of Upper Crew Door Hinge Structure2/26/2008
en Replacement of Blind Rivets on Tailboom3/5/2008
en Fuel Overflow Deflector Upgrade5/13/2008
en Prevention of Tail Rotor Gearbox Excluder Housing Leak4/28/2009
en Inspection and Modification of Number One Engine Jackshaft Support3/21/2011
en Improvement of Generator Grounding4/6/2011
en Hydraulic Fluid Conversion from MIL-PRF-5606 to MIL-PRF-872571/3/2013
en Prevention of Tail Rotor Gearbox Input Quill Leak6/5/2015
en Introduction of Engine Fuel Filter Drain System Reducer 412-061-033-10111/16/2016
en Removal of Hydraulic System #1 and #2 Accumulator P/N 212-076-007-0035/24/2017
en Main Driveshaft Retainer P/N 205-040-175-001, Modification of4/15/2019
en New Tail Rotor Blade 412-016-100-111, Introduction of5/9/2023
en Transmission Case Exchange Program1/21/1976
A en Main Rotor Blade Splice Cover Assembly P/N 204-015-011-16/21/1977
en One Time Inspection of Forward Cross Tube Assemblies P/N 205-050-400-5, -13, -37, -39 -701 and -703 which Have Attained 1000 Hours Service Time9/13/1977
B en Repair of Engine Service Deck Center Panel P/N 212-030-009-007 and -0975/12/2006
C en Mixing and Use of PT6T-3/B/BE/BF/BG Power Sections3/23/2009
B en Tailboom Assemblies, P/N 212-030-100-005/-049/-057/-063/-069/-067/-103/-115/-121/-133/-147/-159/-177/-191 and /-203, Modification for Use On All Model 212 Helicopters8/29/2001
C en Tailboom Assemblies, P/N 212-030-100-005/-049/-057/-063/-069/-067/-103/-115/-121/-133/-147/-159/-177/-191 and /-203, Modification for Use On All Model 212 Helicopters1/19/2006
A en Main Beam Cap 205-030-186-005 Inspection and Replacement with Main Beam Cap 205-030-186-1014/7/2005
B en Main Rotor Hub Assembly P/N 204-012-101, Configuration Change and Upgrade12/18/2002
C en Increased 5 Minute Takeoff Horsepower Rating, and Increased Weight Altitude Temperature Limit5/15/2003
en Introduction of Fuel Pump larger Diameter Drain Line12/23/1999
A en Introduction of Fuel Pump larger Diameter Drain Line4/3/2009
en Engine Mount Tri-Pod Assembly, P/N 214-060-107-005, Engine Mount Bi-Pod Assembly, P/N 214-060-108-005 and Engine Mount Aft Support Assembly, P/N 214-060-118-001, Increase of Retirement Lives3/8/2000
en Introduction of P/N 214-001-133-103 Collar and Modification of Existing P/N 214-001-133-001 Collar6/11/2002
en Main Rotor Hub Assembly Spindle Assembly, P/N 214-010-103, Revision of Inspection and Overhaul Requirements8/30/2002
en Replacement of P/N 214-075-153-007 Nickel-Cadmium Battery4/4/2003
en Conversion of Model 214B to Model 214B-1 Or Model 214B-1 To Model 214B4/6/2004
en Introduction of Alternate Main Rotor Drag Brace Assembly, P/N 214-010-191-10110/21/2009
en Main Rotor Trunnion Assembly, P/N 214-010-230-101, Revision of Magnetic Particle Inspection Procedure11/28/2011
A en Hydraulic Actuator P/N 214-076-146-001/-101 and 214-076-147-001 Bypass Indicator Switch P/N 410032853/3/1989
en Reinforcement/Repair of Tail Boom P/N 214-030-003-711/20/1978
A en Engine to Transmission Driveshaft Assembly P/N 214-040-006, Configuration Change and Upgrade4/2/2001
en Modification of Aft Engine Mount Support U Channel3/29/1993
en Introduction of Improved Transmission Oil Filler Cap Assembly, P/N F502SC12/15/1999
en Introduction of 212-340-113-101 Input Quill Oil Seal and 214-704-218-101 Retrofit Kit12/15/1999
en Introduction of New Transmission Ring Gear Case Assembly, P/N 214-040-361-1016/14/2000
en Introduction of New Combining Gearbox Assembly Generator Pad Seal, P/N 209-340-265-10311/27/2000
en BL 14.0 Left and Right Hand Main Beam Assemblies, FS 227.10 Center Bulkhead Assembly, and FS 255.20 Aft Cabin Bulkhead Assembly, Additional Maintenance Manual Inspection Requirements4/2/2001
en Tail Rotor Hub Assembly Blade Pitch Change Bearing Bolts, Additional Maintenance Manual and Component Repair and Overhaul Manual Inspection and Assembly Requirements1/25/2002
en Tailboom Station (BS) 293.50 Bulkhead Installation and Vertical Fin Assembly Splices, Additional Maintenance Manual Inspection Requirements5/31/2002
en Introduction of P/N 214-001-133-103 Collar and Modification of Existing P/N 214-001-133-001 Collar6/11/2002
en Main Rotor Hub Assembly Spindle Assembly, P/N 214-010-103, Revision of Inspection and Overhaul Requirements8/30/2002
en Introduction of P/N 214-060-056-109 Electric Starter Motor8/30/2002
en Introduction of New Tail Rotor Blade Retaining Bolt and Washer Hardware11/4/2002
en Replacement of P/N 214-175-380-101 Nickel-Cadmium Battery11/8/2002
en Intermediate Gearbox Mounting Hardware Change3/14/2003
A en Scissors And Sleeve Assembly, Sleeve Upper Nut, P/N 214-010-418-001, Additional Maintenance Manual Inspection Requirements6/26/2006
en Installation of Support Plates on Fly by Wire (FBW) 214-001-970-107/-111 Actuators8/28/2006
en Main Rotor Trunnion Assembly, P/N 214-010-230-101, Revision of Magnetic Particle Inspection Procedure11/28/2011
en Modification of 85 Gallon Auxiliary Fuel Kit, P/N 214-706-6005/18/1989
C en Combining Gearbox Assembly P/N 214-040-013, Configuration Change and Upgrade12/22/2000
A en Repair/Modification of Roof Frame P/N 214-031-516-131, -132, -139, and -1408/30/2011
A en Configuration Change and Upgrade Tailrotor Driveshaft Hanger Assembly P/N 214-040-6004/30/2008
A en Repair and Overhaul of AFCS Actuators P/N's 214-001-540-107; -113 (Roll), 214-001-540-109; -115 (Pitch), 214-001-540-111; -117 (Yaw)5/31/2012
A en Main Transmission Assembly P/N 214-040-002, Configuration Change and Upgrade, Revision A9/25/2000
en Scissors and Sleeve Assembly, P/N 214-010-501-103, -107, -109, -113, and -115, Drive Plate Attachment Bolt and Washer Replacement2/14/1995
en Modification of P/N 214-015-300 Main Rotor Blades To P/N 214-015-300-129 by Application of a High Visibility Paint Scheme8/27/1997
A en Modification of Bellmouth Heater Circuit3/15/2000
A en Duel Hydraulic Servo Actuator Change in Retirement Life and Establishment of TBO Interval8/11/1999
en Starter Motor Clutch Assembly, P/N 36B510954G2, Cleaning/Overhaul Procedure1/26/1999
en Replacement of Speaker Mount Bracket Assembly5/2/1999
en Introduction of 214-030-626-103 Clevis & P/N 214-031-601-129 Restraint Assembly; and Modification of P/N 215-030-626-101 Clevis11/19/1999
en Transmission Assembly P/N 222-040-003-103, -109, -111, -119 & -123 Configuration Change & Upgrade5/1/2000
en Lycoming LT 101 Engine, Introduction of Oil Wetted Starter Gear Drive Splines7/28/2000
en Honeywell LTS 101 Engine, Introduction of Flexible Fuel Manifold Assembly10/23/2002
en Honeywell LTS 101 Engine, Introduction of Flexible Fuel Manifold Assembly10/23/2002
en Introduction of Main Driveshaft Assembly P/N 222-044-006-1111/19/2001
en Introduction of Fuel Vent Assembly P/N 430-060-004-1014/16/2001
en Replacement of Transmission Top Case Bushings P/N 222-040-326-1013/25/2002
en Installation of Improved Nose Frahm Bulkhead Support Assemblies10/14/2002
en Rewiring of Fuel Valve Switch6/11/2003
en Improvement of Bulkhead Station 27010/28/2004
en Introduction of Landing Gear Actuator P/N 222-336-001-01512/8/2005
A en Introduction of Tail Rotor Blades 222-016-001-139 and -141 and Tail Rotor Yoke Assembly 222-012-702-005, -113 and -1172/13/2007
en Increase of Main Rotor Mast Assembly (Torquemeter) Seven Calendar Year Inspection9/12/2008
en Inspection of Tail Rotor Blade P/N 222-016-001-123, -123M, -127, -127M, -131, -135, -139M and -141M Reworked per ASB 222-04-1004/21/2009
en Introduction of New Tail Rotor Driveshaft Hanger Bearing 222-344-606-105 and Removal of Overhaul Interval11/11/2015
en Replacement of Nodal Beam Left Side Aft Support Fitting, P/N 222-031-520-1054/5/1983
B en Main Rotor Hub Assembly P/N 222-011-101-103, -105, -107, -109 and P/N 222-012-101, -103 and -107 Configuration Change and Upgrade8/4/2000
C en Swashplate and Levers Assemblies P/N 222-010-400, Configuration Change and Upgrade4/18/2006
en Vertical Fin Assembly, Installation Modification6/17/1998
en Tail Rotor Gearbox P/N 222-042-001-007, -101 and -103 Configuration Change and Upgrade10/20/1999
en Transmission Assembly P/N 222-040-003-111, -109 & -103 Configuration Change & Upgrade5/1/2000
en Honeywell LTS 101 Engine, Introduction of Flexible Fuel Manifold Assembly10/23/2002
en Introduction of Main Driveshaft Assembly P/N 222-044-006-1111/19/2001
en Introduction of Fuel Vent Assembly P/N 430-060-004-1014/16/2001
en Replacement of Transmission Top Cap Bushings P/N 222-040-326-1013/25/2002
en Installation of Improved Nose Frahm Bulkhead Support Assemblies10/14/2002
en Rewiring of Fuel Valve Switch6/11/2003
en Improvement of Tail Rotor Guard Support6/18/2003
en Improvement of Bulkhead Station 27010/28/2004
A en Introduction of Tail Rotor Blades 222-016-001-139 and Tail Rotor Yoke Assembly 222-012-702-113 and -1172/13/2007
en Increase of Main Rotor Mast Assembly (Torquemeter) Seven Calendar Year Inspection9/12/2008
en Inspection of Tail Rotor Blade P/N 222-016-001-123, -123M, -131 and -139M Reworked per ASB 222U-04-714/21/2009
en Introduction of New Tail Rotor Driveshaft Hanger Bearing 222-344-606-105 and Removal of Overhaul Interval11/11/2015
B en Main Rotor Hub Assembly P/N 222-011-101, -105, -109 and P/N 222-010-101-103 and -107 Configuration Change and Upgrade8/4/2000
C en Swashplate and Levers Assemblies P/N 222-010-400, Configuration Change and Upgrade4/18/2006
en Vertical Fin Assembly, Installation Modification6/17/1998
en Tail Rotor Gearbox P/N 222-042-001-007, -101 and -103 Configuration Change and Upgrade10/20/1999
en Upgrade of Battery Relay (2K12)10/5/2000
A en Swashplate and Levers Assemblies P/N 222-010-400, Configuration Change and Upgrade4/18/2006
en Transmission Assembly P/N 222-040-003-119 & -123 Configuration Change & Upgrade5/1/2000
en Main Rotor Hub Assembly P/N 222-012-101-105 and -109 Configuration Changes and Upgrade8/4/2000
en Introduction of Main Driveshaft Assembly P/N 222-044-006-111 and Shim Plate P/N 430-044-002-1011/19/2001
en Introduction of Fuel Vent Assembly P/N 430-060-004-1014/16/2001
en Replacement of Transmission Top Case Bushings P/N 222-040-326-1013/25/2002
en Installation of Improved Nose Frahm Bulkhead Support Assemblies10/14/2002
en Rewiring of Fuel Valve Switch6/11/2003
en Improvement of Tail Rotor Guard Support6/18/2003
en Introduction of Exhaust Duct Assemblies P/N 230-063-301-111/1129/15/2004
en Introduction of Engine Oil Cooler Fan P/N 230-365-001-1039/22/2004
en Introduction of Landing Gear Actuator P/N 222-336-001-01512/8/2005
A en Introduction of Tail Rotor Blades 222-016-001-139 and Tail Rotor Yoke Assembly 222-012-702-113 and -1172/13/2007
en Increase of Main Rotor Mast Assembly (Torquemeter) Seven Calendar Year Inspection9/12/2008
en Inspection of Tail Rotor Blade P/N 222-016-001-123, -123M, -131 and -139M Reworked per ASB 230-04-314/21/2009
en Introduction of New Tail Rotor Driveshaft Hanger Bearing 222-344-606-105 and Removal of Overhaul Interval11/11/2015
A en Vertical Fin Assembly, Installation Modification7/1/1998
en Tail Rotor Gearbox P/N 222-042-001-007, -101 and -103 Configuration Change and Upgrade10/20/1999
en Modification of Tail Rotor Gearbox Case Assembly P/N 406-040-406-1012/3/2000
en Introduction of Improved Main Rotor Pitch Horn Floating Bushing P/N 407-010-116-1013/1/2000
en Introduction of Transmission Oil Pump Seal 38-79004-1042-23/10/2000
A en Introduction of Transmission Oil Pump Seal 38-79004-1042-24/11/2005
en Engine Start Circuit, Addition of Pull Up Resistor to Improve FADEC Start Mode Logic3/17/2000
en Removal of Fuel System Anti-Icing Additive Decal P/N 31-056-18EFHP6/1/2000
en Modification of Emergency Lightweight Float Kit Inspection & Overhaul Schedule8/18/2000
en Introduction of Forward Freewheel Seal 407-340-102-1019/1/2000
en Introduction of Grooved Freewheeling Cone Set 407-040-548-1011/30/2001
A en Introduction of Hydraulic Pump Input Shaft 407-340-107-101 and Adapter 407-340-108-1015/21/2003
en Introduction of Improved Tail Rotor Gearbox Input Seal P/N 427-342-412-1016/13/2001
en Installation Instruction for Oil Cooler Blower Shaft; Brackets, Hangers and Bearings7/25/2001
en Improvement of Horizontal Stabilizer Installation 407-023-800-All8/29/2001
en Pylon Side Beams P/N 407-010-201-105 and P/N 407-010-203-105, Instruction for Returning to Service12/19/2001
A en Pylon Side Beams P/N 407-010-201-105 and P/N 407-010-203-105, Instruction for Returning to Service4/9/2012
en Oil Cooler Blower Shaft Assembly: Introduction of Improved Bearing Hangers, Brackets and Links & Installation of Balance Plates1/25/2002
en Rotor Brake Assembly P/N 206-340-301-103; Installation of Improved Friction Pad Assemblies and Guide Bolts and Reduction of Inspection and Overhaul Interval1/30/2002
en Transmission 407-040-006-All Input Seal Housing, Installation Procedure1/7/2002
en Addition of Tail Rotor Controls Anti-Chaffing Packing3/8/2002
en Introduction of New Cyclic Controls Rigging Procedures5/27/2002
en Spare Tailboom Assembly P/N 407-030-801-201/-203, Addition of Missing Spacer P/N 407-023-800-1373/18/2003
en Introduction of Transmission Input Seal 407-340-003-101 and Main Rotor Mast Seal 407-340-005-1013/19/2003
A en Introduction of Rod End Assembly P/N 407-001-404-1019/22/2003
A en Introduction of Bearing 407-340-339-107 and Grease Mobil 28 per MIL-PRF-813222/10/2004
en Addition of Mast Pole 407-040-038-101, -105 and Swashplate Drive Hub Installation Corrosion Protection10/15/2003
en Introduction of Color Crew Seat Belt, Restraints 222-320-823-129/-13010/29/2003
en Removal of Tuning Weights 407-023-003-(All)10/29/2003
en Replacement of Tail Rotor Yoke Clamp Ring 406-012-105-10110/29/2003
en Introduction of Main Rotor Cone Set 407-010-114-101 Shimming Procedure10/29/2003
en Introduction of Hydraulic Servo Actuators 206-076-062-105 and /-107, Overhaul Inspection11/18/2003
en Introduction of Fuel Tube Assembly P/N 407-062-045-10111/25/2003
en Removal of Hub FRAHM Assembly 407-010-150-All12/2/2003
A en Removal of Hub FRAHM Assembly 407-010-150-All2/8/2012
en Introduction of New Rads-At Script File, Version 7.3012/17/2003
en Aft Firewall Reinforcement12/18/2003
A en Improvement of FADEC Cable Assemblies 407-375-012-101 and 407-375-012-103 Clamping Arrangement2/24/2004
en Introduction of New Main Rotor Blades 407-015-001-127, /-129, Product Balance Adjustment Capability2/13/2004
en Introduction of Exhaust Duct Assembly 407-063-001-1033/5/2004
en Built Up Procedure Change of Mast Assembly 407-040-011-All3/16/2004
en Modification of Drain Holes, Air Inlet Cowl Assembly Floor Panel5/3/2004
en Installation of Main Rotor Flight Controls Anti-Fretting Washers 140-005-19-16-4 and 140-055-15/10/2004
A en Extension of Transmission Assembly and Tail Rotor Gearbox Overhaul Inspection Interval3/28/2007
B en Extension of Transmission Assembly and Tail Rotor Gearbox Overhaul Inspection Interval2/28/2009
A en Introduction of Improved Seat Retaining Clips4/22/2005
en Improvement of Freewheel Aft Seal Lubrication12/6/2004
en Installation of Rotor Brake Modification Kit 407-704-022-1012/22/2005
B en Installation of Rotor Brake Modification Kit 407-704-022-1015/14/2007
en Introduction of Bearing 406-310-405-103 and Main Rotor Pitch Link Assembly 406-010-413-1372/22/2005
A en Introduction of Transmission Oil Pump Seal, 38-79004-1045-24/26/2005
en Introduction of Mast Pole 407-040-038-111, Mast Nut Lock 407-010-117-101 and Retainer 407-010-118-1015/19/2005
en Introduction of Improved 407-340-302-103 Rotor Brake Caliper5/26/2005
en Modification of 407-050-102-101 Aft Crosstube Assembly7/6/2005
en Improved Freewheel Aft Seal P/N 209-340-265-103, Introduction of7/26/2005
A en Improved Freewheel Aft Seal P/N 209-340-265-103, Introduction of7/19/2007
en Introduction of New Frahm Assembly 407-010-150-1118/3/2005
A en Introduction of Engine-to-Transmission Driveshaft Assembly 407-340-310-1015/14/2007
en Primer - Application of Bearing Support 407-030-009-103, 407-030-010-101, 407-030-831-105 and 407-030-832-10110/17/2005
en Introduction of Sleeve Assembly 406-010-409-11311/22/2005
en Improved Corrosion Resistance of Baggage Floor Panel9/25/2006
en Introduction and Installation of FADEC ECU EMC-35R with Reversionary Governor1/29/2007
A en Introduction and Installation of FADEC ECU EMC-35R with Reversionary Governor3/4/2009
B en Introduction and Installation of FADEC ECU EMC-35R with Reversionary Governor8/21/2009
en Modification of Instrument Panel Installation3/27/2007
en Introduction of Improved Caution/Warning Panel 407-375-015-1115/30/2007
en Aft Fuselage Bulkhead at FS 231.4, Installation of9/19/2007
A en Aft Fuselage Bulkhead at FS 231.4, Installation of8/21/2020
B en Aft Fuselage Bulkhead at FS 231.4, Installation of4/9/2024
en Introduction of Adjustable Pedal Assembly 407-001-012-10110/22/2007
en Repair of Pitch Horn 407-010-103-11311/1/2007
en Introduction of Contact Enhancer Stabilant 221/8/2008
en Introduction of Transmission Oil Pump P/N 406-340-100-101 Bearing Replacement Procedure4/8/2008
en Encoding Altimeter Retrofit5/20/2008
en Modification of Aft Crosstube Rocker Beam Supports BHT P/N 400-052-006-101, 400-052-006-103 and Aeronautical Accessories Inc. (AAI) Support P/N 407-729-10110/6/2008
en Installation of Fuel Transfer Light Delay Relays12/15/2008
en Replacement of Hydro Mechanical Unit Bracket Assembly 206-063-7195/26/2009
en Crimping of Inlet Cowl Door Hinge Pin9/21/2009
en Introduction of Pitch Horn 406-012-108-107 and 407-012-112-101 Recurring Torque Check11/17/2009
A en Introduction of Pitch Horn 406-012-108-107 and 407-012-112-101 Recurring Torque Check8/24/2010
en Inspection of Spanner Nut P/N MS17224411/23/2009
en Introduction of Baggage Door 206-031-312-119/-123 Seal Modification5/28/2010
en Introduction of Detent P/N 407-001-133-103, Grip Assembly P/N 407-001-134-103 and Switch Box Assembly P/N 407-001-135-10311/1/2010
en Reissue of Airframe Production Shim Records11/9/2010
A en Reissue of Airframe Production Shim Records12/15/2010
en Installation of New LCD Test Switch for Command Bit Check12/3/2010
en Installation of Litter Door Seal Improvement10/18/2011
en Introduction of Starter-Generator 206-062-200-14112/15/2011
en Aft Fuselage Upper Left Longeron Assembly P/N 206-031-314-237B, Introduction of2/14/2012
A en Aft Fuselage Upper Left Longeron Assembly P/N 206-031-314-237B, Introduction of6/22/2012
B en Aft Fuselage Upper Left Longeron Assembly P/N 206-031-314-237B, Introduction of5/1/2024
en Installation of Solid Machined Aluminum Shims under Transmission Support Beams3/8/2012
A en Installation of Solid Machined Aluminum Shims under Transmission Support Beams5/20/2013
en Modification of Auxiliary Fins Assembly P/N 407-023-003-ALL and Horizontal Stabilizer Assembly P/N 407-023-801-ALL8/23/2012
A en Modification of Auxiliary Fins Assembly P/N 407-023-003-ALL and Horizontal Stabilizer Assembly P/N 407-023-801-ALL1/11/2018
en Re-Identification of 406-310-404-101 Rod-End & 406-010-416-101 Clevis, as Used in 406-010-413-117/-131/-137 Main Rotor Pitch Link Assembly9/13/2012
en Introduction of Improved Ram Air Plenum Assemblies P/N 407-070-211-103/ -104 and Stiffeners P/N 407-030-202-309/-31010/1/2012
en Upgrade of Fuel Transfer Pump and Centrifugal Boost Pump Canister10/30/2012
en Introduction of Seat Back, Seat Bottom Cushions Reupholstering11/9/2012
en Engine Oil Cooler Temperature Regulating Valve Re-Identification, and Retrofit of3/4/2013
en Introduction of Improved Corrosion Protection to Roof Assembly and Repair Instructions6/26/2013
en Retrofit of Nose Console Side Cover Screws12/5/2013
en Modification of the Composite Induction Cowl 407-064-004-101 to Eliminate Interference with the Snow Deflectors1/8/2014
en Relocation of FADEC/ECU Maintenance Switch (Ref. Designator 1S13)2/13/2014
en Improvement of GSC46 Engine Signal Conditioner2/18/2014
A en Improvement of GSC46 Engine Signal Conditioner4/19/2017
en Inspection, Repair, and Modification of Aft Engine Firewall Assembly, for Enhanced Stiffness4/4/2014
A en Inspection, Repair, and Modification of Aft Engine Firewall Assembly, for Enhanced Stiffness3/16/2017
en Addition of Holes in Supports 206-033-311-017, -018 to Ease the Removal/Installation of the Tailbooom Assembly5/29/2014
A en Introduction of Engine FADEC Software V5.4007/23/2014
B en Introduction of Engine FADEC Software V5.4005/4/2016
en Introduction of Garmin G1000H Software P/N 006-B1237-098/7/2014
A en Introduction of Garmin G1000H Software P/N 006-B1237-098/24/2017
en Retrofit of Fuel Signal Conditioner 407-375-016-10310/8/2014
en Removal of Engine Aft Combustion Drain Valve Assembly10/19/2015
en Installation of FADEC Mode Switch Spacer1/20/2015
A en Installation of FADEC Mode Switch Spacer2/18/2016
B en Installation of FADEC Mode Switch Spacer2/25/2016
C en Installation of FADEC Mode Switch Spacer3/23/2016
en Rework or Replacement of Carbon Fiber Inlet Cowling 407-064-004-101 / - 103, Nutplates 90-104CXX-X9/17/2015
en Installation of Rolls-Royce Corporation Engine 250-C47B/811/1/2017
en Introduction of Alternate Lubricant Aeriol Thixo Syn Aviation Grease (C-172) and 406-310-405-105 Bearing8/25/2016
A en Introduction of Alternate Lubricant Aeriol Thixo Syn Aviation Grease (C-172) and 406-310-405-105 Bearing12/6/2016
en Hydraulic Pressure Switch 205-076-044-007, Inspection and Addition of Safety Wire10/7/2016
A en Hydraulic Pressure Switch 205-076-044-007, Inspection and Addition of Safety Wire11/22/2016
en Hydraulic Fluid Conversion from MILPRF-5606 to MIL-PRF-872575/10/2017
en Improvement of Swashplate Boot Installation1/12/2017
en Retrofit of Composite Inlet Cowling2/10/2017
en Introduction of Freewheel Assembly Oil Supply System Fitting4/19/2017
A en Introduction of Freewheel Assembly Oil Supply System Fitting10/19/2017
en Aft Fuselage 2-Pieceupper Left Longeron Assembly 407-030-067-105, Installation of8/21/2020
A en Aft Fuselage 2-Pieceupper Left Longeron Assembly 407-030-067-105, Installation of4/4/2024
en Introduction of Garmin G1000H Software P/N 006-B1237-118/24/2017
en Vertical Fin Tail Skid Assembly P/N 206-020-110-105, Introduction of5/2/2018
en Tailboom 407-030-801-219, Modification of4/22/2019
en M250-C47E/4 Engine Wire Harness Routing, Modification of8/14/2020
en Improved Aft Engine Firewall Installation Kit 407-704-037-101 & -103, Introduction of7/28/2022
en Fuel Filter Assembly 222-366-621-103, Upgrade of8/29/2023
en Litter Door Handle Assembly, Modification of11/28/2022
en Engine Torque, Engine Oil Pressure, & Transmission Oil Pressure Indication Systems, Modification of10/16/2023
en Engine Torque Indication System, Modification of6/7/2023
A en Automatic Flight Control System (AFCS) Wiring Installation, Modification of10/13/2020
en Halon Free Cabin Fire Extinguisher, Introduction of5/18/2022
en Cargo Hook Kit 206-706-341-141 Weight Increase to 3100 lbs, Modification of4/6/2023
en Collective Pitch Transducer 412-074-101-105, Introduction of3/2/2023
en Main Rotor Pitch Link Universal Bearing, Lubricant Conversion Procedure from Thixo Syn (C-172) to Mobilgrease 28 (C-001), Introduction of12/19/2024
A en Main Rotor Pitch Link Universal Bearing, Lubricant Conversion Procedure from THIXO SYN (C-172) to MOBILGREASE 28 (C-001), Introduction of3/21/2025
A en Introduction of Modification for Increase in Vne3/11/1997
en Introduction of Improved Corner Mount 407-310-203-1015/22/1997
en Replacement of Aft Engine Firewall Cover 206-064-902-1372/5/1997
en Inspection and Rework of Directional System Bellcrank Assembly, 406-001-704-1015/15/1997
en Modification of FADEC/ECU and Litton Instrument (Download Cables)6/9/1997
en Inspection and Modification of Throttle Grip Friction10/15/1997
en Introduction of New Tail Rotor Blade P/N 406-016-100-1192/13/1998
en Engine and FADEC ECU, Better Electrical Bonding4/3/1998
en Introduction of Tail Rotor Drive Spline Lubricant7/10/1998
en Modification of Litter Door Seal Installation10/16/1998
A en Introduction of Bearing 407-340-339-101/-103 and Grease Royco 13 Per MIL-G-2501311/12/2001
en Introduction of Pedal Stop, Temporary, and New Rigging Procedure12/12/1998
en Introduction of Improved FRAHM Damper Assembly 407-010-150-105A2/5/1999
en Improvement of Fuel Shut-off Valve Cavity and Shoulder Restraint Installation2/26/1999
en Introduction of Improved Lower Cone Seat 407-010-107-103, Lower Cone 407-010-104-109 and Cone Set 407-010-114-1013/26/1999
en Introduction of New Tail Rotor Installation 407-012-100-1094/15/1999
en Introduction of New Disc Pack Coupling 407-340-340-1016/4/1999
A en Introduction of New Engine Oil System Flexible Hoses 70-079K000Z232 and 70-061J000V2004A9/3/1999
en Freewheel Return Lines, Replacement and Relocation8/27/1999
A en Modification of Pilot and Copilot Collective Stick #1 Throttle Grip6/12/2003
en Elevator Control Tube P/N 412-001-909-101 Modification2/18/2000
en Improved Main Rotor Spindle & Damper Bearing2/18/2000
en Removal of Forward Transmission Fairing Hinge Assembly2/25/2000
en Inspection and Modification of Cyclic and Collective Jackshafts6/30/2000
en Modification of Forward Crosstube8/4/2000
en Main Driveshaft, A) Conversion From 212-040-005-103 to 412-040-005 103. B) Upgrading Main Driveshaft 412-040-005-101 to 412-040-005-1038/2/2000
en Improved Tail Rotor Pitch Links1/31/2001
en Alignment: Engine to Transmission1/29/2001
en Introduction of Engine Power Turbine Governor Level Re-Indexing4/16/2001
en Introduction of 412 Category "A" N2 Rigging Procedure5/9/2001
en Tailboom Assemblies, P/N 212-030-100-111 / -121 / -133 / -147 / -159 / -177 / -191 / -203 and -229, Modification for Use on All Model 412 and 412EP Helicopters8/29/2001
A en Tailboom Assemblies, P/N 212-030-100-111 / -121 / -133 / -147 / -159 / -177 / -191 / -203 and -229, Modification for Use on All Model 412 and 412EP Helicopters1/19/2006
B en Tailboom Assemblies, P/N 212-030-100-111 / -121 / -133 / -147 / -159 / -177 / -191 / -203 and -229, Modification for Use on All Model 412 and 412EP Helicopters8/30/2011
en Introduction of Improved Engine Torque Transmitting System Benz Model 800-00019/7/2001
en Main Rotor Mast 412-040-366-109 Upgrade to a -111 Configuration10/31/2001
en Improvement of Digital Automatic Flight Control System Response on the Yaw Axis11/15/2001
en Tail Rotor Gearbox Assembly 212-040-004-009, Modification to -103 Configuration5/23/2002
en Introduction of Main Rotor Blades, Improved Erosion Shield P/N 412-015-304-1055/27/2002
en Main Transmission Assembly, P/N 412-040-004-103, Configuration Change and Upgrade to 412-040-004-10910/9/2002
en Modification of Transmission Debris Collector Assembly P/N 212-040-146-001 to -101FM10/10/2002
en Improvement of Hydraulic Line Installation12/18/2002
en Introduction of Transmission Oil Cooler Lines P/N 412-040-243-101 & 412-040-244-10112/13/2002
en Main Beam Landing Gear Support Modification1/14/2003
A en Replacement of Landing Light Mechanical Relay Assembly with a Solid-State Switch Mounted on a Printed Wiring Board4/23/2003
en Hub and Sleeve Assembly Elimination of Premature Wear to Drive Link 412-010-405-107/-109 and Hub Assembly 412-010-445-1012/21/2003
A en Main Rotor Hub Assembly 412-010-100-All, Modification of Hardware and Installation Procedure5/15/2003
en Modification of Main Rotor Brake Quill, 412-040-123-101 to 412-540-014-1013/19/2003
en Lower Nose Doors P/N 212-030-217-011 & 212-030-205-001 and Seal Replacement3/26/2003
en Tailboom Fin Stiffener Modification4/3/2003
en Flange Adapter P/N 412-040-634-101 and 412-040-625-101, Elimination of Retirement Life6/12/2003
en Introduction of Transmission Oil Filter Assembly P/N 204-040-760-1138/27/2003
en Oil Drain Valve P/N 209-062-010-001, Powerplant Accessory Gearbox, Improved Security of Screws2/16/2004
en Intake Screen Improvements6/15/2004
B en Intake Screen Improvements11/5/2015
en Modification of Transmission Oil Pump 212-040-184-0016/28/2004
en New Chip Detector Interface Problem with Master Caution Panel9/13/2004
en Introduction of Simple Pendulum Absorber Additional Washer10/25/2004
en Bearing and Liner Assemblies P/N 204-010-433-001 and P/N 204-011-443-001: Installation Improvements5/11/2005
en Aft Top Cowling Reinforcement8/18/2005
en Tailboom Bulkhead Reinforcement10/10/2005
A en Tailboom Bulkhead Reinforcement12/14/2007
B en Tailboom Bulkhead Reinforcement12/12/2016
en Introduction of Improved Mast Torque Signal Conditioner2/16/2006
A en Improved Baggage Compartment Door Seal6/22/2007
en Installation of Missing Rigging Rivets6/9/2006
en Vertical Fin Cover Hinge Pin Improved Installation7/21/2006
en Center Engine Deck Modification for Use on Other Aircraft10/18/2006
en Power Section Case Drain Fitting Standardization3/8/2007
en Prevention of Hydraulic System #1 False Warning Indication5/8/2007
en Attitude and Heading Reference System (AHRS), Modification of the 26 Volt AC Wiring5/9/2007
en Use of Arm and Bearing Assembly Alternate Bolt NAS6604H3511/20/2007
en Reinforcement of Upper Crew Door Hinge Structure2/26/2008
en Replacement of Blind Rivets on Tailboom3/5/2008
en Improvement of Bell Helicopter Vibration Monitor (BHVM) Kit P/N 412-262-001/412-262-002/412-262-003/412-262-0043/31/2008
en Replacement and Rewire of Cargo Arm Switch5/6/2008
en Fuel Overflow Deflector Upgrade5/13/2008
en Introduction of Liner P/N 412-040-102-1035/20/2008
en Improvement of Bell Helicopter Vibration Monitor (BHVM) Kit P/N 412-262-001/412-262-002412-262-003/412-262-004 with Smartcycle and Interface Kit Installed2/6/2009
en Prevention of Tail Rotor Gearbox Excluder Housing Leak4/28/2009
en Introduction of Holes in L/H Main Beam Web for Use with Leveling Jacks5/4/2009
en Aft Crosstube Rocking Beam Upgrade11/16/2009
en Fuel Transfer Improvement9/30/2010
A en Fuel Transfer Improvement11/15/2011
en Inspection and Modification of Number One Engine Jackshaft Support3/21/2011
en Improvement of Generator Grounding4/6/2011
en Configuration Change and Upgrade of Fore & Aft Force Gradient Assemblies 212-001-0354/5/2012
en Configuration Change and Upgrade of Lateral Force Gradient Assemblies 212-001-0344/5/2012
en Transmission Upgrade5/9/2012
en Hydraulic Fluid Conversion from MIL-PRF-5606 to MIL-PRF-872571/3/2013
en Cockpit Voice Recorder Kit, Modification10/29/2013
en Introduction of New Main Rotor Mast 412-040-366-All Assembly8/15/2014
en Introduction of New Tail Rotor Blade 412-016-100-11112/3/2014
A en Introduction of New Tail Rotor Blade 412-016-100-11112/15/2014
en Prevention of Tail Rotor Gearbox Input Quill Leak6/5/2015
en Hub and Sleeve Assembly 412-010-401, Configuration Change and Upgrade4/18/2016
en ADIU, DU, Software Upgrade to SW 2.0 and GTN 750 Main Software Upgrade to Version 4.102/1/2016
A en ADIU, DU, Software Upgrade to SW 2.0 and GTN 750 Main Software Upgrade to Version 4.103/24/2016
en Prevention of Intermediate Gearbox Output Quill Coupling and Tail Rotor Couplings Grease Leak2/9/2016
A en Prevention of Intermediate Gearbox Output Quill Coupling and Tail Rotor Couplings Grease Leak2/20/2017
B en Prevention of Intermediate Gearbox Output Quill Coupling and Tail Rotor Couplings Grease Leak3/4/2021
en LCR 100 Attitude Heading Reference System (AHRS) Modification of the Heading Synchro Output10/14/2016
en Introduction of Engine Fuel Filter Drain System Reducer 412-061-033-10111/16/2016
en ADIU, DU, Software Upgrade to SW 3.0 and GTN 750 Main Software Upgrade to Version 6.113/28/2017
A en ADIU, DU, Software Upgrade to SW 3.0 and GTN 750 Main Software Upgrade to Version 6.1111/22/2017
en Removal of Hydraulic Systems #1 and #2 Accumulator P/N 212-076-007-0035/24/2017
en Replacement of Radar Altimeter Cables10/23/2017
en Configuration Change and Upgrade of Swashplate and Support Assembly, 412-010-4029/10/2019
en Modification of Main Driveshaft Retainer P/N 205-040-175-0014/15/2019
en Collective Lever Assembly, 412-010-464-101, Introduction of12/9/2020
en Air Data Command Display AL-300 Cable Assembly, Modification of8/30/2021
en Display Units (DU) P/N 412-374-009-All Electrical Installation, Modification of11/24/2021
en Cabin Portable Fire Extinguisher Bracket Kit 412-704-144-101, Introduction of5/26/2022
en Light Dimming Resistors, Rewiring & Retrofit of 1/16/2025
en Bleed Air Duct Clamp, Replacement or Rework of10/31/2024
A en Main Beam Cap 205-030-186-005 Inspection & Replacement with Main Beam Cap 205-030-186-1019/8/2005
A en Use of Alternate Main Rotor Blade Bolt in Lieu of Expandable Main Rotor Blade Bolt4/15/2004
A en Introduction of Procedures for Elimination of Mast Seal Leaks7/25/2005
B en Mixing and Use of Engine Power Sections3/23/2009
en Introduction of Fuel Pump Larger Diameter Drain Line12/23/1999
A en Introduction of Fuel Pump Larger Diameter Drain Line4/3/2009
en Modification of Pilot and CoPilot Collective Stick #1 Throttle Grip3/1/2000
en Elevator Control Tube P/N 412-001-909-101 Modification2/18/2000
en Incorporation of Improved Static Pitot Installation3/10/2000
en Rescue Hoist 412-152-350 Replacement of Hook P/N BL-5740-11 with P/N HK-114-15/19/2000
en Improved Tail Rotor Pitch Links1/31/2001
en Alignment: Engine to Transmission1/29/2001
en IFF Diversity Mode4/16/2001
en Introduction of Engine Power Turbine Governor Level Re-Indexing1/31/2001
en Backshell Replacement of AL-3005/7/2001
A en Connector Replacement of Navigation Map Display6/18/2003
en KY-58 Jumper Assembly11/2/2001
en Introduction of Main Rotor Blades Improved Erosion Shield P/N 412-015-304-1055/27/2002
en CDU Software Update, Version 8.0 to Version 9.16/7/2002
en Modification of Transmission Debris Collector Assembly P/N 212-040-146-001 to -101FM10/10/2002
en Improvement of Hydraulic Line Installation12/18/2002
en Introduction of Transmission Oil Cooler Lines P/N 412-040-243-101 & 412-040-244-10111/3/2002
en Main Beam Landing Gear Support Modification1/14/2003
A en Replacement of Landing Light Mechanical Relay Assembly with a Solid-State Switch Mounted on a Printed Wiring Board4/23/2003
en Hub and Sleeve Assembly Elimination of Premature Wear to Drive Link 412-010-405-107/-109 and Hub Assembly 412-010-445-1012/21/2003
A en Main Rotor Hub Assembly 412-010-100-All, Modification of Hardware and Installation Procedure5/15/2003
en Lower Nose Doors P/N 212-030-217-011 & 212-030-205-001 and Seal Replacement3/26/2003
en Flange Adapter P/N 412-040-634-101 and 412-040-625-101, Elimination of Retirement Life6/12/2003
en Introduction of Transmission Oil Filter Assembly P/N 204-040-760-1138/27/2003
en Oil Drain Valve P/N 209-062-010-001, Powerplant Accessory Gearbox, Improved Security of Screws2/16/2004
en Use of Alternate Main Rotor Blade Bolt in Lieu of Expandable Main Rotor Blade Bolt4/15/2004
en Intake Screen Improvements6/15/2004
en Modification of Transmission Oil Pump 212-040-184-0016/28/2004
en Tail Rotor Blade P/N 212-010-750-105, -107, -113, -115, -127 "New Paint Finish"7/12/2004
en Introduction of Simple Pendulum Absorber Additional Washer10/25/2004
en Bearing and Liner Assemblies P/N 204-010-433-001 and P/N 204-011-443-001: Installation Improvements5/11/2005
en Aft Top Cowling Reinforcement8/18/2005
en Tailboom Bulkhead Reinforcement10/10/2005
A en Tailboom Bulkhead Reinforcement12/14/2007
B en Tailboom Bulkhead Reinforcement12/12/2016
en Introduction of Improved Mast Torque Signal Conditioner2/16/2006
A en Improved Baggage Compartment Door Seal6/22/2007
en External Mount Rescue Hoist Assembly BL-20200-400-21/15/2007
en Power Section Case Drain Fitting Standardization3/8/2007
en Center Engine Deck Modification for Use on Other Aircraft9/11/2007
en Use of Arm and Bearing Assembly Alternate Bolt NAS6604H3511/20/2007
en Reinforcement of Upper Crew Door Hinge Structure2/26/2008
en Fuel Overflow Deflector Upgrade5/13/2008
en Introduction of Liner P/N 412-040-102-1035/20/2008
en Prevention of Tail Rotor Gearbox Exluder Housing Leak4/28/2009
en Introduction of Holes in L/H Main Beam Web for Use with Leveling Jacks5/4/2009
en Aft Crosstube Rocking Beam Upgrade11/16/2009
en Fuel Transfer Improvement9/30/2010
A en Fuel Transfer Improvement10/15/2010
B en Fuel Transfer Improvement11/15/2011
C en Fuel Transfer Improvement4/9/2012
en CDU Software Upgrade, Version 9.1 to Version 9.33/21/2011
en Inspection and Modification of Number One Engine Jackshaft Support3/21/2011
en Improvement of Generator Grounding4/6/2011
en Configuration Change and Upgrade of Fore & Aft Force Gradient Assemblies 212-001-0354/5/2012
en Configuration Change and Upgrade of Lateral Force Gradient Assemblies 212-001-0344/5/2012
en Mixing and Use of Engine Power Sections5/9/2012
en Modification of Pilot and Copilot Collective Stick Throttles5/2/2012
en Hydraulic Fluid Conversion from MIL-PRF-5606 to MIL-PRF-872571/3/2013
en Introduction of New Main Rotor Mast 412-040-366-All Assembly8/15/2014
en Prevention of Tail Rotor Gearbox Input Quill Leak6/5/2015
en Hub and Sleeve Assembly 412-010-401, Configuration Change and Upgrade4/18/2016
en Prevention of Intermediate Gearbox Output Quill Coupling and Tail Rotor Couplings Grease Leak2/9/2016
en Tailboom Vertical Fin Harness Additional Clamping11/7/2016
en Introduction of Engine Fuel Filter Drain System Reducer 412-061-033-10111/16/2016
en Introduction of New Tail Rotor Blade P/N 412-016-100-1152/21/2017
en Removal of Hydraulic System #1 and #2 Accumulator P/N 212-076-007-0035/24/2017
en Configuration Change and Upgrade of Swashplate and Support Assembly, 412-010-4029/10/2019
en Collective Lever Assembly, 412-010-464-101, Introduction of12/9/2020
A en Modification of Hydraulic System #1 Wiring10/31/2001
A en Tailboom Assembly Upgrade to Later Configuration1/19/2006
A en Introduction of Procedures for Elimination of Mast Seal Leaks9/9/2005
en Introduction of Liner P/N 412-040-102-1035/20/2008
en Bleed Air Duct Clamp, Replacement or Rework of10/31/2024
en Replacement of Fuel Transfer Control Unit (FTCU) P/N 427-375-010-1013/14/2001
en Replacement of Oil Cooler Blower Shaft Assembly P/N 427-044-201-1018/6/2001
en Replacement of Engine Control Adapter Plate P/N 427-360-302-103 and Gasket P/N 427-360-015-10111/2/2001
en Introduction of New Hardened Wear Sleeve P/N 427-044-123-1015/16/2002
en Rework of Main Rotor Blade Abrasion Strip5/24/2002
en Removal of Battery Relay Diode, 2430CR46/18/2002
en Installation of Instrument Cooling Fans10/2/2002
en Introduction of Increased Gross Weight (IGW) 6550LBS Kit P/N 427-706-021-101, -103, -10512/18/2002
en Replacement of Integrated Instrument Display System (IIDS). Data Acquisition Unit (DAU), 427-375-001-101 and 427-375-001-113, and Display Unit (DU), 427-375-001-103 and 427-375-001-1151/16/2003
en Serviceability Check and Lubrication Interval of Tail Rotor Driveshaft Bearings P/N 407-340-339-101 and P/N 407-340-339-1032/4/2003
en Introduction of "Warning Rotating Shaft No Hands Hold" Decal on Transmission Pylon Mounts3/5/2003
en Relay Box P/N 427-075-161-101 and 427-075-162-101 Inspection for Internal Corrosion and Waterproofing4/23/2003
en Introduction of Fuel Feed Hose Assembly P/N 427-366-280-1016/4/2003
en Relocation of Cabin Heater Bleed Air Shutoff Valve P/N S-9730EC-1 and Particle Separator Kit P/N 427-706-012 Bleed Air Shutoff Valve P/N S-9730EC-26/17/2003
en Replacement of Artificial Horizontal Indicator6/27/2003
en Modification of Tail Rotor Driveshaft Assembly Internal Coupling Lock Assembly 427-044-115-10112/2/2003
B en Introduction of Bearing 407-340-339-107 and Mobil Grease 28 Per MIL-PRF-8132210/16/2006
C en Introduction of Bearing 407-340-339-107 and Mobil Grease 28 Per MIL-PRF-813221/13/2016
en Modification of Emergency Floatation System10/13/2004
en Introduction of Hydraulic Pump Input Shaft 407-340-107-101 and Adapter 407-340-108-1011/7/2005
en Introduction of Transmission Oil Pump Seal 38-79004-1045-27/5/2005
A en Introduction of Main Transmission #8 Oil Jet 427-040-678-105 with Increased Flow10/16/2006
en Improvement of Fuel System9/16/2005
en Tailboom Assembly P/N: 427-034-801-All, Configuration Check2/27/2007
en Introduction of Adjustable Directional Control Pedal P/N 407-001-012-1013/29/2007
en 427 Relay Box Improvement1/27/2009
en Introduction of New Tail Rotor Actuator Idler Assembly P/N 427-001-723-10310/26/2009
en Servicing of Vertical Live Mount P/N 427-310-201-10311/12/2009
en New Improved Door Seals11/30/2009
en Introduction of New Main Rotor Blades 427-015-001-133, /-135, Product Balance Adjustment Capability2/11/2010
en Replacement of Encoding Altimeter P/N 214-175-278-1016/4/2010
en Input Driveshaft P/N: 206-340-300-105. Removal of Airworthiness Limitation and Introduction of Overhaul Requirement6/2/2011
en Inspection of Transmission Beam Pylon Mount Holes6/6/2011
en Introduction of Rotor Brake Limit Switch P/N D0413-18/21/2014
en Hydraulic Pressure Switch 205-076-044-007, Inspection and Addition of Safety Wire10/7/2016
A en Hydraulic Pressure Switch 205-076-044-007, Inspection and Addition of Safety Wire11/22/2016
B en Hydraulic Pressure Switch 205-076-044-007, Inspection and Addition of Safety Wire1/10/2018
en Addition of Packings to the P/N 429-380-001-107 Integrated Hydraulic Module (IHM) Filter Bowls2/11/2010
en Introduction of Improved Engine Fire Extinguisher System4/16/2010
en Servicing of Vertical Live Mount P/N 427-310-201-1077/6/2010
en Upgrade of ADIU, DU and FCC Software/Hardware8/30/2010
en Modification of Roof Beam10/12/2010
en Upgrade to ADIU and DU Software (Release III)12/17/2010
en Introduction of Removal of Crew FRAHM Damper Kits11/4/2010
en Introduction of Removal of Main Rotor Hub Expanded Blade Bolts P/N 429-310-004-10111/30/2010
en Removal of Engine Reserve Fire Extinguisher Bottle Kit12/2/2010
en Introduction of Removal of Erosion Tape on Main Rotor Blades P/N 429-015-100-1231/18/2011
A en Introduction of Removal of Erosion Tape on Main Rotor Blades P/N 429-015-100-1231/22/2013
en Introduction of Tail Rotor Mast Nut P/N 429-012-106-101 Torque Increase1/19/2011
en Improvement of Air Conditioner System Drainage3/15/2011
A en Improvement of Air Conditioner System Drainage4/18/2011
en Introduction of Removal of Tail Rotor Gearbox Fairings3/1/2011
en Installation of Markings for Rear Loading Door Safe Operation3/3/2011
en Upgrade of Air Data Attitude Heading Reference System (ADAHRS), P/N 429-075-123-1014/27/2011
en Installation of New Decals7/19/2011
en Main Gearbox Corrosion Prevention7/27/2011
en Verification of Torque on the Hydraulic Manifold Plugs8/30/2011
en Improvement of Fuel System10/17/2011
A en Improvement of Fuel System11/4/2011
en Improvement of Electrical Bonding between Crosshead Assembly P/N 429-012-110-101 and Plate P/N 429-012-111-10111/11/2011
en Improvement and Relocation of Sliding Door Switch12/14/2011
en ADIU, DU, FCC Software (Release IV) Upgrade to and GNS 430W / GNS 530W Main Software Update to Version 4.015/16/2012
en Introduction of Weather Radar Kit Retrofit and TCAS Antenna Kit Retrofit10/22/2013
en Modification of Firewall Assembly P/N 429-069-012-1013/5/2012
en Cyclic Stick Friction Material Change3/6/2012
en Introduction of Cylinder Valve Protector Kit for Emergency Float Installation5/16/2012
en Introduction of New Disconnect Pins for Emergency Float Kit Installation5/30/2012
en Improvement of Support Latch Crew Door, Lower and Upper Assembly5/30/2012
en Introduction of New Plugs for Hydraulic Manifold Assemblies P/N 429-080-101-101 and 429-080-102-10111/1/2012
en Introduction of Increase Internal Gross Weight Kit P/N 429-706-079-1011/11/2013
en Tail Rotor Gearbox Support Assembly, Drain Hole Retrofit1/10/2013
A en Tail Rotor Gearbox Support Assembly, Drain Hole Retrofit4/18/2013
en Sliding Passenger Door, Improvement of5/3/2013
en Installation of Fuel Vent Restrictor6/24/2013
en New Replacement Rails, Lower Forward and Aft Sliding Door10/28/2013
en Introduction of Exhaust Ejector and Blanket Assemblies P/N 429-363-111-103/-10411/18/2013
A en Introduction of Exhaust Ejector and Blanket Assemblies P/N 429-363-111-103/-1044/30/2014
en Introduction of Starter Generator Scoop 429-061-202-103 and -1043/4/2014
en Introduction of Rotor Brake Limit Switch P/N D0413-18/21/2014
en Introduction of Lift Frame Cover Inspection Holes8/28/2014
en Introduction of Sliding Door Hold-Open Device8/18/2015
en Introduction of New Hoist Limitation Decal12/11/2015
en Upgrade to GNS 530W/430W Series Unit Main Software Version 5.20 and GPS Software Version 5.012/18/2015
A en Upgrade to GNS 530W/430W Series Unit Main Software Version 5.20 and GPS Software Version 5.07/21/2016
B en Upgrade to GNS 530W/430W Series Unit Main Software Version 5.20 and GPS Software Version 5.011/27/2019
en Retrofit of GTX 330 ES (ADS-B) Transponder (429-704-020)12/18/2015
A en Retrofit of GTX 330 ES (ADS-B) Transponder (429-704-020)7/21/2016
B en Retrofit of GTX 330 ES (ADS-B) Transponder (429-704-020)11/27/2019
en Introduction of Main Rotor Hub Assembly 429-110-100-113 and -1152/4/2016
A en Introduction of Main Rotor Hub Assembly 429-110-100-113 and -1155/19/2017
en Modification of Vertical Fin and Tail Skid2/8/2016
en GTN 650 and GTN 750 Notification of MOD Level 5 per Garmin Service Bulletin 15592/9/2016
en Conversion of LISI Dual Cargo Hook P/N IS19-106 to Bell Helicopter 429-330-639-1014/18/2016
en Introduction of Fwd and Aft Center Firewall Reinforcement6/16/2016
en Improvement of Passenger Door8/10/2017
en Improvement of Crew Door Installation8/11/2017
en Introduction of Flexible Static Dischargers4/20/2017
en Introduction of Honeywell ADAHRS Enhanced Heading Preset Mode5/23/2017
en Relocation of Integrated Hydraulic Module (IHM) Connector Decals5/25/2017
en Gutter and Nose Modification, Introduction of9/19/2017
A en Gutter and Nose Modification, Introduction of1/29/2020
en Repositioning of Fuel Cap Adapter P/N 5082096/15/2017
en Addition of Cockpit Voice / Flight Data Recorder (CVFDR) Kit Yaw Rate Recording Capability11/8/2017
en GTN 750/650 NAV/COM/GPS Series Unit Main Software Version 6.21, Upgrade to6/28/2018
en 18.5 Inch Passenger Seat Retrofit for Airline Configuration Installation, Introduction of9/27/2018
en Bellcrank Assemblies 429-001-523-101, 429-001-523-103, 429-001-532-101, and 429-001-532-103, Upgrade of12/3/2018
A en Bellcrank Assemblies 429-001-523-101, 429-001-523-103, 429-001-532-101, and 429-001-532-103, Upgrade of5/13/2019
B en Bellcrank Assemblies 429-001-523-101, 429-001-523-103, 429-001-532-101, and 429-001-532-103, Upgrade of8/23/2021
en GTN 750/650 NAV/COM/GPS Units with Main Software Version 6.21, Feature Enablement Issue2/5/2019
en New GNS 430/530 Avionics Blower ACF528, Introduction of1/7/2020
en Air Comm Corporation 429EC-200 and 429EC-202 Air Conditioning Systems Compressor Clutch Re-Wire per Service Kit SK-429EC-800 Revision C10/28/2019
A en Air Comm Corporation 429EC-200 and 429EC-202 Air Conditioning Systems Compressor Clutch Re-Wire per Service Kit SK-429EC-800 Revision C8/17/2020
en Tail Rotor Drive System, Upgrade of7/6/2020
en GTN 750/650 NAV/COM/GPS Series Unit Main Software Version 6.21, Upgrade to 6.6210/19/2020
en Missing Decals on Firewall 429-069-101-187, Inspection and Installation of4/1/2021
en Forward Fuel Vent, Relocation of4/21/2021
en Halon Free Cabin Fire Extinguisher Installation 429-899-007-101, Introduction of5/12/2022
en Radiorax Retrofit Kits, Introduction of7/11/2023
en 429-010-108-101 & -105 Grip Assembly Corrosion Protection2/28/2024
en Keel Beam Improved Corrosion Prevention, Introduction of4/7/2025
A en Replacement of Flight Control Computer P/N 065-00158-0202 and 065-00158-02105/11/2000
B en Replacement of Electronic Flight Instrument System (EFIS), P/N 430-375-002-101 and 430-375-002-1056/17/2002
en Replacement of Standby Attitude Indicator4/18/2000
en Inspection and Re-Routing of Engine Number 1, Heat Sensing Element P/N 7021108/14/2000
en Swashplate and Support Assembly P/N 430-010-400, Configuration Change and Upgrade12/22/2000
en Introduction of Main Driveshaft Assembly P/N 222-044-006-111 and Shim Plate P/N 430-044-002-10112/22/2000
en Introduction of Fuel Vent Assembly P/N 430-060-004-1014/16/2001
en Inspection of Flight Controls System and Electrical Installation5/6/2002
en Introduction of DC Starter Generator, P/N 206-062-200-12912/13/2002
en Main Rotor Hub Installation Improvements2/10/2003
en Upgrade of Engine FADEC Electrical Control Unit (ECU)6/3/2003
en Modification of Engine Start Circuit4/9/2003
en Rewiring of Fuel Valve Switch6/11/2003
en Improvement of Tail Rotor Guard Support6/18/2003
en Replacement of Tail Rotor Control Tube Assembly P/N 430-001-007-1014/6/2004
A en Replacement of Tail Rotor Control Tube Assembly P/N 430-001-007-1016/25/2007
B en Replacement of Tail Rotor Control Tube Assembly P/N 430-001-007-1013/20/2009
en Introduction of Exhaust Duct Assemblies P/N 230-063-301-111/1129/15/2004
en Introduction of Engine Oil Cooler Fan P/N 230-365-001-1039/22/2004
en Addition of Weight on Gear Switch3/15/2005
en Addition of Main Rotor Mast Assembly, Calendar Inspection10/25/2005
en Introduction of Landing Gear Actuator P/N 222-336-001-01512/8/2005
A en Introduction of Tail Rotor Blades 222-016-001-139 and Tail Rotor Yoke Assembly 222-012-702-113 and -1172/13/2007
en Transmission Assembly P/N 430-040-003-109 and -113, Configuration Change and Upgrade4/24/2007
en Installation of Circuit Breaker Identification Collar3/4/2008
en Inspection of Tail Rotor Blade P/N 222-016-001-123, -123M, -131 and -139M Reworked per ASB 430-04-314/21/2009
en Improvement of Passenger Door Cam Follower12/22/2010
en Introduction of New Tail Rotor Driveshaft Hanger Bearing 222-344-606-105 and Removal of Overhaul Interval11/11/2015
en Improvement of Main Rotor Blade P/N 430-015-001-101 and -1239/24/1999
en Tail Rotor Gearbox P/N 222-042-001-101 and -103 Configuration Change and Upgrade10/20/1999
en Rework of Fuel System Drain Kit FT3003911/8/2017
en Installation of Anti-Chafe Tape on Tailboom1/30/2018
en Introduction of Landing Gear Assembly SLS-030-800-00912/13/2017
en Improvement of Transmission Fairing Installation1/16/2018
A en Improvement of Transmission Fairing Installation2/18/2019
en Introduction of ELT Enclosure Kit 505-014-1001/30/2018
en Introduction of Hand Hold3/27/2018
en Introduction of Rain Gutter3/28/2018
en Verification of Crimping of Access-Panel / Door Hinges1/30/2018
en Substitution of CRES Fasteners to Titanium Fasteners3/27/2018
en Door Lock Retrofit Kit9/6/2018
A en Door Lock Retrofit Kit11/19/2018
en Introduction of New Exhaust Pipe Welded Assembly SLS-063-001-0055/21/2018
en Introduction of New Interior Protective Pads12/6/2018
en Inspection and Protection of Aft Roof Panels and Ceiling Area11/28/2018
en Application of Freewheel Assembly Housing Sealant12/7/2018
en Introduction of Cargo Hook Assembly Abrasion Plates12/19/2018
en Introduction of New Exhaust Pipe Cover12/14/2018
A en Improvement of Door Seals9/18/2019
en Improvement of Door Seals3/7/2019
en Introduction of Airframe Truss Corrosion Preventive Maintenance Program4/23/2019
en Avionics Fans, Modification of2/17/2020
en Engine Oil Tank Anti-Siphon Valve, Introduction of4/22/2020
A en Engine Oil Tank Anti-Siphon Valve, Introduction of5/11/2020
en Hydraulic Reservoir Filter Module (HRFM) Cold Weather Filler Cap, Introduction of3/9/2020
en Horizontal Stabilizer, Aft Corner Radius, Modification of4/5/2020
en Garmin G1000H Software 006-B2472-02, Introduction of4/17/2020
A en Garmin G1000H Software 006-B2472-02, Introduction of5/26/2020
en Hydraulic Servo Actuator Drip Tray, Introduction of6/2/2020
en Grounding Bracket Improved Installation, Introduction of1/15/2021
en Restraint Assembly (Live Pylon) SLS-030-910-109, Improvement of1/14/2021
A en Restraint Assembly (Live Pylon) SLS-030-910-109, Improvement of3/13/2023
B en Restraint Assembly (Live Pylon) SLS-030-910-109, Improvement of10/2/2024
en New Engine Oil Tank SLS-065-100-065, Introduction of7/5/2021
en SLS-704-017-105 Retrofit Kit Cargo Hook -EASA, Introduction of10/5/2021
en Engine Oil Tank Sight Glass, Inspection & Rework of 2/6/2025
en Lubricant Conversion Procedure from Thixo Syn (C-172) to Mobilgrease 28 (C-001), without Disassembly, Introduction of12/19/2024
A en Lubricant Conversion Procedure from THIXO SYN (C-172) to MOBILGREASE 28 (C-001), without Disassembly, Introduction of1/13/2025
B en Lubricant Conversion Procedure from THIXO SYN (C-172) to MOBILGREASE 28 (C-001), without Disassembly, Introduction of3/21/2025
en Alternate Spare Part; Synchronized Elevator P/N 205-030-856-169 and 205-030-856-171
en Alternate Spare Part; Synchronized Elevator P/N 205-030-856-169 and 205-030-856-17111/20/2006
A en Alternate Spare Part; Synchronized Elevator P/N 205-030-856-169 and 205-030-856-17110/27/2007
B en Alternate Spare Part; Synchronized Elevator P/N 205-030-856-169 and 205-030-856-17111/4/2013
en Alternate Spare Part; 42 Degree Gearbox 212-040-003-0235/2/2007
en Alternate Spare Part; Main Rotor Pitch Link Assembly 204-011-127-0035/2/2007
en Alternate Spare Part; Swashplate Gimbal Ring Assembly P/N 212-010-416-1014/21/2015
en Alternate Spare Part; Collective Hub Assembly P/N 204-011-405-0135/31/2016
A en Alternate Spare Part; Scissor Lever Assembly P/N 212-010-407-111 and 212-010-407-1131/9/2007
A en Alternate Spare Part; Scissor Lever Assembly P/N 212-010-407-111 and 212-010-407-113
B en Alternate Spare Part; Scissor Lever Assembly P/N 212-010-407-111 and 212-010-407-1135/31/2016
A en Alternate Spare Part; Tail Rotor Blade Assembly P/N 204-011-702-1211/9/2007
A en Alternate Spare Part; Tail Rotor Blade Assembly P/N 204-011-702-121
B en Alternate Spare Part; Tail Rotor Blade Assembly P/N 204-011-702-12110/21/2013
A en Alternate Spare Part; Scissors and Sleeve Assembly P/N 204-011-401-0211/9/2007
A en Alternate Spare Part; Scissors and Sleeve Assembly P/N 204-011-401-021
A en Alternate Spare Part; Swashplate and Support Assembly P/N 204-011-400-129
A en Alternate Spare Part; Swashplate and Support Assembly P/N 204-011-400-1291/9/2007
B en Alternate Spare Part; Swashplate and Support Assembly P/N 204-011-400-1294/21/2015
en Replacement of Forward & Aft Landing Gear Cap Assemblies6/11/2001
en Modification of Transmission Debris Collector Assembly P/N 212-040-146-001 to -101FM7/7/2003
en Introduction of Transmission Oil Filter Assembly P/N 204-040-760-1138/27/2003
en Introduction of Swashplate and Support Assembly, Bolt 204-011-463-10710/20/2003
en Introduction of Alternate Measured Gas Temperature (MGT) Indicator 6100-085, Torque Meter (TQ) Indicator 65100-062, Transmission Oil Temp/Press Indicator 65000-012 and Engine Oil Temp/Press Indicator 65000-01110/14/2005
en Installation of Missing Rigging Rivets6/20/2006
en Improved Baggage Compartment Door Seal6/20/2006
en Interference Between the 42 Degree Gear Box and Tailboom6/3/2008
en Prevention of Tail Rotor Gearbox Excluder Housing Leak9/14/2009
en Magnetic Particle Inspection of the Main Rotor Drag Brace 204-011-14010/29/2009
en Alternate Fuel Pressure Indicator1/15/2015
en Prevention of Tail Rotor Gearbox Input Quill Leak6/3/2016
en Gimbal Ring Assembly P/N 212-010-416-1016/3/2016
en Alternate Gas Producer (N1) Indicator2/20/2017
Miscellaneous
NameRevisionLangSubjectDate
E en Nondestructive Inspection Procedures: Ultrasonic Inspection of 204-011-121 Main Rotor Grip4/9/2002
en Product Update: 4072/6/2004