The Aviation DataBase: Service Information: Schweizer
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Illustrated Parts Catalogs
NameRevisionLangSubjectDate
1 en 269A, TH-55A, A-1, B & C6/1/1982
Reiss 2 en 269A, TH-55A, A-1, B & C2/1/1978
revised en 269C (S/Ns 1166 and Subsequent)10/3/2008
revised en 269C-15/15/2009
revised en 269C-15/28/2010
reissued en 269D/269D Configuration "A"5/19/2006
Instructions
NameRevisionLangSubjectDate
1 en Note & Safety: 1D112 Series Tow Release Hook Assembly7/19/2011
revised en Note & Safety: 1D112 Series Tow Release Hook Assembly9/18/1984
en 269 Series: Main Rotor Thrust Bearing Kit6/9/1994
Service Bulletins
NameRevisionLangSubjectDate
en Springs Used in the 1-26 Tow Release Mechanism
en Failures in the 1-26 Wheel Assembly
en Wing Fitting Corrosion10/16/1978
A en Aileron Bellcrank Inspection and Bushing Installation1/25/1980
en Controls Installation, Fuel Shut Off1/26/1982
en Inspection of Elevator Control System Pushrods for Corrosion and Cracks6/1/1989
en Short Aileron Control Push Rods Subject to Handling and Wind Damage10/28/1947
en Replacement of the Adjustable End of the Short Aileron Push Rod 19B-120-9A by a Fixed End6/9/1949
en Spoiler Control Jamming6/2/1959
en Fin and Rudder Lower Hinge - Excessive Wear6/29/1971
en Excessive Wear on the 26B120-2A Elevator Control Cable at the 1A-12S Fairlead on the Fin Spar1/3/1958
en Seat Back Disengaged8/17/1962
en Weld Failure at the Forward Control Torque Tube Bearing Bracket8/20/1965
en Fuselage Frames were Built with the Rudder Cable Fairlead Bracket, RH, Welded to the Upper Cross Member rather than to the RH Vertical Member12/30/1968
en Rudder Hinge, Lower, Attachment to Fin Spar2/11/1971
en Inspection of Control Stick Pivot Bolt12/18/1975
3 en Variations in the Hardware Attaching the Vertical Fin Spar to the Fuselage Structure3/17/1978
en Removeable Ballast Installation, Weight & Balance7/15/1983
en Mandatory One Time Inspection - Engine Oil Cooler2/10/1992
en Mandatory Inspection and Modification of Longitudinal Trim Mounting Plate and Trim Arm Stop12/16/1991
1 en Mandatory Possible Restriction of Throttle Controls3/20/1992
en Mandatory Inspection of Low Tip Speed Tail Rotor Swashplate Bellcrank Assembly Hole9/4/1991
1 en Mandatory Possible Restriction of Cyclic Pitch Control5/30/1991
1 en Mandatory Inspection and Retirement of 269A2324(BSC) and -7 Tailboom Center Attachment Fittings11/7/1991
1 en Mandatory Inspection and Retirement of 269A2324-7 Tailboom Center Attachment Fitting11/7/1991
en Mandatory One Time Inspection - Thrust Bearing Nut P/N 269A1315 with Possible Incomplete Threads5/8/1992
en Mandatory Inspection of Seat Belt Snap Hook End Fittings2/10/1992
en Mandatory One Time Inspection of Main Rotor Blades2/10/1992
en Mandatory Corrosion Damage Inspection of Main Rotor Drive Shaft P/N 269A53055/8/1992
2 en Mandatory Possible Deterioration of Certain Main Transmission Pinion Assembly Teeth and Ring Gear Teeth2/19/1996
3 en Mandatory Possible Deterioration of Certain Main Transmission Pinion Assembly Teeth and Ring Gear Teeth4/6/1998
en Mandatory Maintenance and Operation Requirements for Safe Operation of Surplus TH-55A Helicopters5/8/1992
en Mandatory Tail Rotor Pedal Bulkhead (Floor Beam) Gusset10/30/1992
en Mandatory Bendix Fuel Injector System Model RSA-7AA1, P/L 2524347 (Lycoming P/N 77885) and Precision Airmotive Corporation Service Bulletin PRS-94 and PRS-94 Supp 111/7/1991
en Mandatory One-Time Inspection of Throttle Override Bellcrank Assembly3/20/1992
en Mandatory Triple-Latch Door - Lower Latch Bolt and Collective Friction Guide Assembly Interference3/20/1992
en Mandatory Inspection of Clutch Cable Assembly and Terminal End (P/N AN669L3RH or MS21260L3RH)3/20/1992
en Mandatory Precision Airmotive Corporation Bulletins PRS-97 and PRS-986/1/1992
en Mandatory Tailboom Support Struts Corrosion Inspection9/3/1993
1 en Mandatory Main Rotor Drive Shaft Inspection2/1/1993
2 en Mandatory Inspection of Clutch Control Spring Assembly Installation6/11/1993
1 en Mandatory One-Time Inspection of Lower Coupling Drive Shafts, and New Engine/Rotor Tachometer Markings5/21/1993
2 en Mandatory 50-Hour Inspection of Main Rotor Blade Abrasion Strip10/2/1998
en Mandatory Corrosion Inspection and Treatment of Lower Coupling Drive Shaft10/19/1994
en Mandatory Periodic Inspection of Main Transmission Pinion Input Shaft Assembly10/19/1994
en Mandatory Inspection of Aft Cluster Fitting5/24/1995
en Mandatory One-Tune Inspection of Tail Rotor Blades9/15/1995
1 en Mandatory 239A6050-005 LTS Tail Rotor Pitch Control Assembly, Torque Verification of 269A6258 Nut, and Application of Torque Stripes7/23/1996
en Mandatory Textron Lycoming Service Bulletin No. 52510/15/1996
en Mandatory Textron Lycoming Service Bulletin No. 527C7/24/1997
en Mandatory One-Time Inspection of Main Rotor Hub and Shaft, and New Assembly Procedure6/24/1998
1 en Mandatory Replacement of Old Style Tail Rotor Drive Fork Hinge Bolt and Clarification of Torque Value12/26/2002
2 en Mandatory Inspection of 269A5104-007 Main Transmission Ring Gears with Specific Serial Numbers and Reporting of Inspection Results3/12/2001
en Mandatory Tail Rotor Swash Plate Shaft Inspection3/12/1999
1 en Mandatory Tail Rotor Swash Plate Shaft Inspection10/14/1999
en Mandatory Inspection/Replacement Criteria for Certain Upper H-Frame Bearings (Schweizer P/N 269A5050-78)2/18/2000
en Mandatory Replacement of Shoulder Harness and Inertia Reel Assembly8/23/2000
en Mandatory Textron Lycoming Special Advisory No. 63-12001/2/2001
en Mandatory One-Time Inspection for Condition and Modification of Certain Idler Pulley Support Assemblies3/12/2001
en Mandatory Main Rotor Swashplate Bearing P/N 269A130110/26/2001
en Mandatory One-Time Inspection of Certain 269A2234-3 (LH) and 269A2235-3 (RH) Aft Cluster Fittings1/25/2002
en Mandatory 269A2234 BSC and 269A2235 BSC Aft Cluster Fitting Modification9/6/2002
1 en Mandatory Modification of 269A5590-1 and 269A5483-1/-3 Clutch Spring Assemblies4/6/2004
en Mandatory Throttle Governor Bellcrank9/5/2003
1 en Mandatory Support Bracket (269A8460-3) Throttle Bellcrank, Inspection for Cracks9/24/2004
1 en Mandatory Inspection and Modification of 269A7316-13 Lateral Control Trim Assembly3/4/2005
1 en Mandatory Modification of 269A4564-5 and -7 Linear Actuators9/18/2006
1 en Mandatory Modification of Locknut/Hoist Eye Assembly3/17/2006
en Mandatory Tail Rotor Swashplate Bellcrank Assembly Safety Washer Installation10/4/2006
en Mandatory Main Transmission Input Pinion Corrosion Protection3/7/2008
1 en Mandatory Main Transmission Input Pinion Corrosion Protection8/24/2010
en Mandatory Tail Rotor Drive Shaft Splined Fittings Inspection1/30/2008
1 en Mandatory Tail Rotor Drive Shaft Splined Fittings Inspection4/21/2008
en Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device7/14/2008
1 en Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device9/26/2008
en Mandatory Landing Gear Skid Tube Aft Sleeve Inspection9/26/2008
en Mandatory Fuel Strainer Leak Check10/3/2008
en Mandatory Modification of Cabin Door Hinges10/24/2008
en Mandatory Incorrect Grease Identification in Certain Serial Number Helicopters1/9/2009
en Mandatory Incorrect Bushing Used in 269C Flight Controls8/24/2010
en Mandatory Inspection and Modification of Tailboom Support Strut Expandable Bolt12/21/2010
1 en Mandatory 269A6050-005 Tail Rotor Pitch Control Assembly, Torque Verification of 269A6258 Nut, and Application of Torque Stripes7/23/1996
en Mandatory One-Time Inspection of Tail Rotor Blades1/29/1997
en Mandatory 50-Hour Inspection of Main Rotor Blade Abrasion Strip1/28/1997
en Mandatory Textron Lycoming Service Bulletin No. 527C7/24/1997
1 en Mandatory Primer Hose Replacement7/14/1998
en Mandatory Inspection of Main Transmission Pinion Splines; New Torque Check Requirement for Aft Pinion Nut3/20/1998
en Mandatory One-Time Inspection of Main Rotor Hub and Shaft, and New Assembly Procedure7/14/1998
1 en Mandatory Inspection of 269A5104-007 Main Transmission Ring Gears with Specific Serial Numbers and Reporting of Inspection Results1/8/2001
en Mandatory Tail Rotor Swash Plate Shaft Inspection3/12/1999
1 en Mandatory Tail Rotor Swash Plate Shaft Inspection10/14/1999
en Mandatory Inspection/Replacement Criteria for Certain Upper H-Frame Bearings (Schweizer P/N 269A5050-78)2/18/2000
en Mandatory Textron Lycoming Special Advisory No. 62-12001/2/2001
en Mandatory One-Time Inspection for Condition and Modification of Certain Idler Pulley Support Assemblies3/12/2001
1 en Mandatory Main Rotor Swashplate Bearings P/N 269A130111/14/2001
en Mandatory One-Time Inspection of 269A2172-5 Aft Mast Support Tube Forward Fitting8/9/2002
en Mandatory Modification of 269A5590-1 Clutch Spring Assembly11/4/2003
1 en Mandatory Support Bracket (269A8460-1) Throttle Bellcrank, Inspection for Cracks9/24/2004
1 en Mandatory Inspection and Modification of 269A7316-13 Lateral Control Trim Assembly3/4/2005
1 en Mandatory Modification of Locknut/Hoist Eye Assembly3/17/2006
1 en Mandatory Tail Rotor Swashplate Bellcrank Assembly Safety Washer Installation1/29/2007
en Mandatory Slick Service Bulletin SB1-06A11/29/2006
en Mandatory Main Transmission Input Pinion Corrosion Protection3/7/2008
1 en Mandatory Main Transmission Input Pinion Corrosion Protection8/24/2010
en Mandatory Tail Rotor Drive Shaft Splined Fittings Inspection1/30/2008
1 en Mandatory Tail Rotor Drive Shaft Splined Fittings Inspection4/21/2008
en Mandatory Reprint of Precision Airmotive Mandatory Service Bulletin4/28/2008
en Mandatory Throttle Control Restriction7/14/2008
1 en Mandatory Throttle Control Restriction11/24/2008
en Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device7/14/2008
1 en Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device9/26/2008
en Mandatory Landing Gear Skid Tube Aft Sleeve Inspection9/26/2008
en Mandatory Fuel Strainer Leak Check10/3/2008
en Mandatory Modification of Cabin Door Hinges10/24/2008
en Mandatory Incorrect Grease Identification in Certain Serial Number Helicopters1/9/2009
en Mandatory Center Control Cover Contacting Lateral Cyclic Control Rod8/24/2010
en Mandatory Incorrect Bushing Used in 269C-1 Flight Controls8/24/2010
en Mandatory Inspection and Modification of Tailboom Support Strut Expandable Bolt12/21/2010
1 en Mandatory 50-Hour Inspection of Main Rotor Blade Abrasion Strip9/28/1995
1 en Mandatory 269A6050-005 Tail Rotor Pitch Control Assembly, Torque Verification of 269A6258 Nut, and Application of Torque Stripes7/23/1996
en Mandatory One-Time Inspection of Tail Rotor Blades1/29/1997
3 en Mandatory Main Rotor Hub and Shaft Inspection and New Assembly Procedure11/3/1998
en Mandatory Replacement of Main Rotor Hub Hoisting Eye7/24/1998
1 en Mandatory Inspection of 269A5104-007 Main Transmission Ring Gears with Specific Serial Numbers and Reporting Inspection Results1/8/2001
en Mandatory Tail Rotor Swash Plate Shaft Inspection3/12/1999
1 en Mandatory Tail Rotor Swash Plate Shaft Inspection10/14/1999
en Mandatory Inspection/Replacement Criteria for Certain Upper H-Frame Bearings (Schweizer P/N 269A5050-78)2/18/2000
en Mandatory Replacement of Forward and Aft Kaflex Drive Shaft Coupling Bolts9/28/2001
en Mandatory Main Rotor Swashplate Bearings P/N 269A130110/26/2001
1 en Mandatory Horizontal Stabilizer, Inspection of End Plate and Attachment3/20/2003
en Mandatory Inspection and Modification of 269A7316-13 Lateral Control Trim Assembly2/8/2005
en Mandatory Fuel Pump Drain Tube4/26/2005
2 en Mandatory Modification of Locknut/Hoist Eye Assembly4/19/2006
1 en Mandatory Modification of CEF 8618M33 Linear Actuator4/19/2006
en Mandatory Tail Rotor Swashplate Bellcrank Assembly Safety Washer Installation10/4/2006
en Mandatory Installation of Latch Assembly Fuel Cell Cover Kit11/13/2006
1 en Mandatory Inspection for Fatigue Cracking in 269D330-1 Aft Fuselage Assembles and Installation of Stabilizer Mount Doublers11/17/2006
2 en Mandatory Inspection for Fatigue Cracking in 269D330-1 Aft Fuselage Assembles and Installation of Stabilizer Mount Doublers7/13/2007
3 en Mandatory Inspection for Fatigue Cracking in 269D330-1 Aft Fuselage Assembles and Installation of Stabilizer Mount Doublers12/13/2007
en Mandatory Main Transmission Input Pinion Corrosion Protection3/7/2008
1 en Mandatory Main Transmission Input Pinion Corrosion Protection8/24/2010
en Mandatory Alignment Inspection - Kaflex Shaft to Engine Output Shaft11/1/2007
en Mandatory Restrictions in Rolls-Royce Turbine Engine Operation10/24/2007
en Mandatory Inspection of Tail Rotor Pedal Attachment Structure and Installation of Tail Rotor Pedal Attachment Reinforcement Kit11/12/2007
en Mandatory Tail Rotor Drive Shaft Splined Fittings Installation1/30/2008
1 en Mandatory Tail Rotor Drive Shaft Splined Fittings Installation4/21/2008
en Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device7/14/2008
1 en Mandatory Installation of Single Wheel Ground Handling Wheel Locking Device9/26/2008
en Mandatory Landing Gear Skid Tube Aft Sleeve Inspection9/26/2008
en Mandatory Modification of Cabin Door Hinges12/8/2008
en Mandatory Inspection of Engine/Transmission Oil Cooler Impeller10/24/2008
1 en Mandatory Inspection of Engine/Transmission Oil Cooler Impeller6/29/2009
2 en Mandatory Inspection of Engine/Transmission Oil Cooler Impeller9/1/2009
en Mandatory Longitudinal Trim Assembly Spring Attachment2/13/2009
en Mandatory Oil Cooler Impeller Blade Containment Kit9/1/2009
en Mandatory Replacement of PN 369A7706-3 RPM Governor Lever Control Rod5/15/1981
en Mandatory Main Rotor Swashplate Bearing, PN 369A7003-3 Inspection and Possible Replacement12/23/1983
2 en Mandatory Inspection and Rework Tail Rotor Control System, Rudder Pedal Installation4/10/2003
en One-Time Inspection of Tow Release Assembly; Daily Inspection of Tow Release Assembly: Pilot's Preflight Inspection of Tow Release Assembly; 100-Hour Inspection of Tow Release Assembly10/3/1986
3 en One-Time Inspection of Tow Release Assembly; Daily Inspection of Tow Release Assembly: Pilot's Preflight Inspection of Tow Release Assembly; 100-Hour Inspection of Tow Release Assembly1/31/1988
6 en One-Time Inspection of Tow Release Assembly; Daily Inspection of Tow Release Assembly: Pilot's Preflight Inspection of Tow Release Assembly; 100-Hour Inspection of Tow Release Assembly12/29/2009
en Daily Inspection of Aircraft Structures; Detailed Visual Inspection of Tail Rudder, Elevators, Vertical Tail Surface (Tail Fin) and Fuselage3/25/1987
en Aerobatics in Schweizer Sailplanes3/25/1987
en Visual Inspection of 26B-123-1A Elevator Push Rod Assembly for Corrosion; Possible Replacement of 26B-123-1A Push Rod with 26147B Push Rod6/16/1987
1 en Identification and Possible Replacement of Tow Release Arm1/31/1988
en Replacement of Seat Back Adjustment Bracket3/1/1989
en Improper Rear Seat Loading10/18/1988
en Periodic Inspection of Vertical Fin Forward Spar5/11/1995
en Inspection of Aileron Push-Rod1/12/1998
en Periodic Inspection of Vertical Fin - Rear Spar11/11/1999
1 en Periodic Inspection of Vertical Fin - Rear Spar4/20/2004
en Inspection of Elevator Control Cable Assembly1/30/2004
en One-Time Inspection of Seat Pan Installation9/25/2003
1 en Inspection of Fuselage Frame Structure6/20/1988
Service Information Letters
NameRevisionLangSubjectDate
en Input Spline Coupling P/N 5607 Time Increase - Tail Rotor Transmission6/8/1966
en Recommended Overhaul Periods - Rotorcraft Powerplant6/8/1966
1 en Interim Revision - Handbook of Maintenance Instructions (HMI) RE: 1200 Hour Periodic Inspection of Main Rotor Gear Drive Assembly10/5/1966
en Replacement of Thermostatic Oil Cooler By-Pass Valves, per Avco, Lycoming Division, Service Bulletin No. 304A (Red Bordered Mandatory) Dated June 24, 19668/1/1966
1 en Bendix Fuel Injection System, RSA Series, Trouble Shooting Technique for Identifying Fuel to Air Seal Leak, which could Affect Engine Idle
en Belt Drive Clutch Engagement Spring P/N 5476 - Availability and Utilization8/22/1966
en Illumination Intensity - Engine Instruments10/4/1966
en Pressure Variation with Temperature - Amphibious Float Landing Gear11/7/1966
en Intake Pipe Replacement per Avco - Lycoming Division Service Instruction No. 1162, Dated September 16, 196612/1/1966
en Interim Revision - Handbook of Maintenance Instructions (HMI) RE: Main and Tail Rotor Overspeed Criteria12/5/1966
en Interim Revision - Handbook of Maintenance Instructions (HMI) RE: Limited Life and Component Overhaul List1/11/1967
en Interim Revision - Handbook of Maintenance Instructions (HMI) RE: Inspection - Sudden Stoppage Drive System2/20/1967
1 en Definition - Limited Life Parts2/21/1967
en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Maintenance Instructions for Low Tip Speed Tail Rotor Assembly8/23/1967
en Lubrication - Upper Pulley Sprag Clutch: Inspection - Main and Tail Rotor Transmissions9/21/1967
en Replacement - Internal Seal, Fuel Drain Valve4/1/1967
en Chemical Attack - Re: Bolteron and Royalite Parts4/1/1967
en Interim Revision - Handbook of Maintenance Instructions RE: Installation Pitch Control Rod, Inspection Pitch Bearing Cases, Main Rotor Swashplate Assembly and Swashplate, Scissors Link8/22/1967
en Approved Fuels for Allison Model 250 Series Engine6/16/1967
en Proper Height of Contact Springs in - 200 Bendix Magneto Distributor Block5/5/1967
en Interim Revision - Handbook of Maintenance Instructions (HMI) RE: B1145-1 Main Rotor Blade Assembly7/7/1967
en Allison Model 250 Engine - Sales and Service7/10/1967
en Interim Revision (HMI) RE: Lower Coupling Drive Shaft (P/N 269A5504 Basic and 269A5504-5 Shaft Assembly) - Wear Tolerances9/22/1967
en New Tail Rotor Blade, P/N 6124-99/25/1967
en Interim Revision - Handbook of Maintenance Instructions (HMI) RE: Inspection and Maintenance Procedures for Landing Gear Oleo Dampers10/2/1967
en Bendix Corporation; RS Fuel Injection Service Bulletin No. 23 (dated), 10 Jan 196710/31/1967
en Interim Revision - Handbook of Maintenance Instruction RE: Overhaul Cycle, Tail Rotor Drive Transmission Assembly11/17/1967
en Interim Revision (HMI) RE: Special Torque Data - Forward Nut, Lower Pulley Drive Shaft12/13/1967
en Interim Revision - Handbook of Maintenance Instructions RE: 25 Hour Periodic Inspection12/14/1967
en Lycoming Service Instructions No. 1141. Dated 20 October 1967 - Subject: Replacement of Worn Starter Ring Gears12/28/1967
en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Overhaul Cyclic; Main Rotor Gear Drive Assembly1/2/1968
1 en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Inspection - Possible Retirement, Main Rotor Blades7/15/1968
en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Inspection - Cable Belt Drive Clutch Control2/27/1968
en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: 400 Hour Inspection - Droop Stop Retainer Ring3/14/1968
en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: 600 Hour Inspection - Droop Stop Retainer Ring3/14/1968
en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Limited Life; Main Rotor Driveshaft and Main Rotor Gear Box Pinion Assembly3/14/1968
en Mixing Main Rotor Transmission Gears4/5/1968
en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Sudden Stoppage Inspection; Lateral Control Bellcrank PN 269A75064/18/1968
2 en Bendix Energy Controls Division - Field Service Representation2/19/1973
en Interim Revision - Handbook of Maintenance Instructions (HMI) Re: Wear Tolerances - PN 269A5618 Output Shaft, Tail Rotor Transmission7/16/1968
en Balance Weight Installation - Main Rotor Blades9/11/1968
1 en Grommet (269A2309), Tail Rotor Control Rod Guide Assembly3/12/1969
en Main Rotor Blade Categories A, B, C and D10/18/1968
en Parts Replacement Kit PN 269A5540-901 Belt Drive Clutch Damper Assembly11/22/1968
en Inspection of Landing Gear Skid Assembly12/9/1968
en Tail Boom Spoiler (P/N 269A2320-5)2/20/1969
en Tailboom Center Support (Saddle) Fitting PN 269A2324-74/29/1970
en Oil Pressure Limitations6/12/1970
en New Attaching Hardware - Engine Cooling Shroud Side Panels11/4/1970
en New Heavy Wall Driveshaft for High Speed Tail Rotor System4/19/1971
en Ordering Replacement Engine Air Intake Pipes7/6/1971
1 en Timing of Magneto and Engine Ignition System4/6/1972
en Increased Overhaul Time Interval for Main and Tail Rotor Transmissions8/23/1971
en Bendix Electrical Components Division - Service Bulletin No. 551 (dated), September 1971 - New Distributor Block Lubricant10/8/1971
en Lamp Replacement - PN 269A4322 Anticollision Light Assembly (Grimes)12/13/1971
en Abrasion Tape Application - Main Rotor Blades PN 269B1145, -1 and 269A11601/20/1972
en Desert Oil Cooler Kit2/14/1972
en Improved Main Rotor Blade Damper Assembly, P/N 269A1927-54/6/1972
1 en Lycoming Service Bulletins, No. 336B (dated), 19 June 1972 and No. 343A (dated), 18 February 1972 - Periodic Inspection - Lubrication and Parts Replacement for Bendix S4LN-1208 Magnetos8/7/1972
en Tail Rotor Gearbox PN 269A6027 - Interchangeability Between Model 269 Series Helicopters5/1/1972
en Lycoming Service Bulletin No. 336B (dated), 19 June 1972 Re: Periodic Inspection and Lubrication of Magneto Distributor Bushing; Periodic Parts Replacement of Left Magneto7/24/1972
en Lycoming Service Instruction No. 1255 (dated), 4 August 1972 - Thermostatic Oil Cooler Bypass Valve Replacement11/1/1972
en Inflated Float Installation - Battery Acid Spillage1/2/1973
en Fuel Shut-Off Control Cable - Rerouting to Reduce Operating Friction1/2/1973
en Increase Ring Gear to Carrier Torque2/19/1973
en Corporate Name Change3/1/1973
en Avco Lycoming Service Bulletin No. 365 (dated), 1 June 1973 - Bendix Magneto Conversion to Incorporate Flexible Drive7/31/1973
en New Main Transmission Input Pinion Forward Roller Bearing PN 269A5051-2010/22/1973
en Vendor Warranty and Repair - Police Patrol Equipment12/24/1973
en High Tip Speed Tail Rotor P/N 269A6004 -- Spare Assembly and Component Availability4/1/1974
en Discussion of Hughes Serial Numbering Method5/31/1974
en Inflatable Floats - Service, Maintenance and Repair Facilities8/5/1974
en Replacement - Tail Rotor Control Pedal Retaining Pins11/11/1974
en Replacement - 24V clutch Actuator Noise Filter Capacitors11/18/1974
en Bendix Fuel Injection System Flow Divider Installation on HIO-360 Series Engine - Inspection/Modification5/5/1975
2 en Main Transmission - Ring, Pinion Gear Compatibility11/5/1979
en New Conical Type Teeter Bearings for LTS Tail Rotor Assembly8/11/1975
en Proper Correlation of Throttle and Collective Pitch Controls11/10/1975
en New Fiberglass Canopy Slat Installation PN 269A221612/11/1975
en New Tail Rotor Blades with Cadmium Plated Spar Assembly for Improved Corrosion Protection7/26/1976
en Alternate Lamp for Engine Instrument 3-Pack Units PN 269A4112 Series7/26/1976
en New PN 269B1145-25 Main Rotor Blade with Trim Tab10/11/1976
en New Aluminum Isolator Brackets for Mounting Engine Cooling Scroll Reduce Stress Levels in Engine Hanger Assemblies8/8/1977
en Fiberglass Canopy Slat Installation, P/N 269A2216 - Attachment of Night Flying Position Lights7/22/1977
en New P/N 269A1185-1 and P/N 269A1190-1 Main Rotor Blade Assemblies with Leading Edge Abrasion Strip12/15/1977
en Paint Schedules and Ordering Procedures4/10/1978
en Inspection and Serviceability - Main Rotor Thrust Bearing PN 269A5050-63 and -735/22/1978
1 en Approved Grease for Drive System Rotating Bearings11/2/1981
en Installation of Engine Exhaust Flange Gaskets7/15/1978
en Limited Life Increase for PN 269A5050-63 and -73 Main Rotor Thrust Bearings; Unlimited Service Life for PN 69A5408 Series Tail Rotor Transmission (LTS) Output Shaft8/1/1979
en New PN 269A8251 Heat Insulation Kit for Model 269C Engine Exhaust System9/28/1979
en Main Transmission Input Pinion Shaft PN 269A5103 and -9 - Limited Life Increased to 6000 Hours8/27/1979
en Installation of Engine Exhaust Collector Required for 2050 LB Gross Weight Helicopter Operation9/28/1979
en Belt Drive Transmission PN 269A5559-3 Coupling Shaft - Limited Life Increase to 6000 Hours11/19/1979
1 en Drive System Rotating Bearings - Daily Purge with Mobil 28 Grease2/1/1982
en New Comfort Clips for Sam Browne Seat Belt and Shoulder Harness Assemblies12/10/1979
en New Wedge Base Lamp Socket PN 2973932 for Both Instrument Cluster Assemblies1/1/1980
en Bushing Requirements for PN 269A2324-7 Tailboom Center Support (Saddle) Fitting Installation3/24/1980
1 en 24V Battery Relay, P/N MS24166D1 - Corrosion Protection and Relay Replacement11/19/1982
en Periodic cleaning and Lubrication of Sealed Bearing - Upper Pulley, Lower Coupling drive Pulley, Idler Pulley and Main Rotor Driveshaft Thruster Bearing6/9/1980
6 en Exchange Program - Selective Helicopter Components2/12/1985
2 en New Drive Belt H-Frame with PN 269A5050-78 Upper Pulley Bearing Having Service Life of 3000 Hours2/15/1982
en Compliance with FAA Airworthiness Directives and Hughes Mandatory (Red Border) Service Information Notices9/30/1980
1 en Periodic Inspection and Replacement - Main Rotor Hub Attaching bolts PN 269A1229 and 269A12327/21/1981
1 en Aeroshell 14 Grease Only Approved Lubricant for Rotor System Oscillating Bearings11/2/1981
en Ground Handling Precautions for Main Rotor Systems Equipped with Elastomeric Dampers7/31/1981
en Corrosion Control Manual now Available for General Distribution and Purchase8/21/1981
en New Protective Boot for 269A6034 Series LTS Tail Rotor Assembly9/1/1981
en Torque Value Established for PN 269A5714 Tail Rotor Driveshaft Forward Retaining Nut9/1/1981
en New PN 269A5498-5 Lower Coupling Pulley Driveshaft provides as Replacement for PN 269A5498-3 Driveshafts10/1/1981
1 en Summary of FAA Supplemental Type Certificates for Hughes Model 269 Series Helicopters9/1/1982
1 en Unlimited Service Life P/N 269A5430 and 269A5430-1 Driving Spline Fitting and 269A6030 Driven Spline and Inspection Criteria4/9/1982
en PN 269A5050-74 Idler Pulley Bearing and PN 269A5050-78 Belt Drive H-Frame Upper Bearing - Service Life Increased to 3000 Hours2/15/1982
en New PN 269A3150-9 Aft Landing Gear Damper Assemblies Increase Static Height of Tail Skid for 269C Helicopters Operating in Cold Weather or with Increased Gross Weight3/26/1982
1 en Distribution and Shipment of Schweizer-Hughes Model 300 Publications2/1/1984
en New Tailboom Assembly, P/N 269A2320-911/24/1982
en Unauthorized Tail Boom Assemblies for 269 Series Helicopters2/27/1984
en Replacement of Aircraft Identification Plates2/11/1986
en Service Life Cutoff Limit2/11/1986
en Cleaning of Elastomeric Dampers1/2/1987
en Proper Operation of Trim Controls1/2/1987
en Explanation of Temporary Revision System1/2/1987
en Life Limit Update1/2/1987
en Overhaul Schedule Update1/2/1987
en Breakaway Torque Increase - MR Bearing Assembly9/29/1987
en Company Policy - Unapproved Parts3/10/1988
en Avco Lycoming Service Bulletins9/1/1987
en Publication Index - Major Change in Scope and Revision Procedure12/15/1987
en Avco Lycoming Service Instructions No. 1014K and 1409A2/1/1989
2 en New Belt Drive Transmission "H" Frame7/27/1996
en Errors in 269 Notice and Letter Set5/30/1991
en New Part Numbers for Tail Rotor Transmission Assembly11/7/1991
Service Information Notices
NameRevisionLangSubjectDate
4 en Mandatory Field Modification - Idler Pulley Assembly, P/N 269A55149/15/1971
en Retrofit - Clutch Engagement Spring Assembly Guide5/4/1966
en Modification - Fuel Injection System Bendix RSA5AB15/4/1966
en Inspection - Belt Drive Transmission Strut P/N 54225/18/1966
en Float Kit - Removable Skid Extension7/16/1966
en Modification - Engine Fuel Pump Drain Line7/18/1966
en Inspection - Belt Drive Idler Pulley Arm P/N 55067/15/1966
2 en Mandatory Inspection - Possible Retirement Main Rotor Blade10/3/1977
1 en Field Replacement - Auxiliary Fuel Boost Pump11/29/1968
en Mandatory Field Modification - Belt Drive Idler Pulley Clutch Shaft P/N 54569/1/1966
en Field Modification - Engine Cooling Scroll9/29/1966
en Modification - Throttle Bellcrank and Control Cover Clearance6/27/1967
en Field Installation - Chip Detector Engine and Transmission11/4/1966
1 en Field Modification - Tail Rotor Assembly9/27/1967
en Field Modification - Fuel Injector System Rosette Fitting11/17/1966
en Tape Application Area - Tail Rotor Blades12/1/1966
en Field Modification - Induction System Air Filter Housing P/N 814312/2/1966
en Field Installation - Spring Longitudinal Bungee2/20/1967
en Bellcrank Installation Servo Fuel Injector Throttle Control8/23/1967
en Reverse Installation - Collective Bungee Assembly2/22/1967
en Field Replacement - Main Rotor Driveshaft2/20/1967
en Main Rotor Blades, P/N 269B1145 Single Configuration Paint9/19/1967
en Bracket Installation - Scroll Assembly11/1/1967
en Kit Installation - Low Speed Tail Rotor System8/22/1967
en Kit Installation - Exhaust Heater Support2/22/1967
en Removal AN960-416L Washer, Engine Cooling Shroud Side Panel Assembly4/1/1967
en Inspection and Field Modification - Main Rotor Gear Drive Assembly P/N 269A51753/29/1967
en Exhaust Manifold Assembly Modification to Accommodate New Exhaust Adapter Flange11/8/1967
1 en Field Installation and Modification - Dual Bolt, Tail Skid Mounting Hardware5/23/1973
en Rerouting - Alternator Wire Ties4/1/1967
en Kit Installation - Cabin Sealing Re: Carbon Monoxide Ingestion5/12/1967
en Locknut Installation - Center Collective Pitch Stick Assembly P/N 269A9962 - Dual Control8/7/1967
en Inspection - P/N 269A5513 Bumper Plug, Lower Coupling Driveshaft7/26/1967
en Inspection - Tail Rotor Driveshaft, Excessive End Play7/26/1967
2 en Mandatory Retirement - Bellcrank Assembly, Lateral Pitch Mixer Idler P/N 269A75063/10/1969
en Inspection - Cable, Belt Drive Clutch Control2/27/1968
2 en Installation - Stiffener Canopy Slat8/14/1968
en Tail Rotor Repair - Erosion, Blade Leading Edge3/15/1968
en AC Engine Mounted Full - Flow Oil Filter - Installation3/15/1968
en Installation - Jumper Wires3/15/1968
en Retrofit - Dual Clutch Spring Attachment Fitting P/N 269A5436-5 and 269A5436-73/28/1968
en Retrofit - Dual Clutch Spring Attachment Fitting P/N 269A5436-5 and 269A5436-74/23/1968
en Kit Installation - Utility Lights3/29/1968
en Rework Electrical Components - Radio Noise Level Control3/29/1968
en Mandatory Inspection - Main Rotor Blade Flapping Hinge Bearings4/18/1968
en Retrofit - Alternate Battery Location5/2/1968
en Shim Installation - Bearing, Upper Pulley Assembly5/8/1968
en Retrofit - Throttle, Governor Control System5/8/1968
en Kit Installation - Alternator Mounting Assembly - M100246/5/1968
1 en Rework - Tail Rotor Pedal Arm P/N 269A7336-511/12/1968
en Inspection - Tail Boom Center Attachment Fitting P/N 269A23246/24/1968
en Dashpot Installation - Throttle Control Modification Kit M100407/26/1968
1 en Inspection - Engine Lower Coupling Drive Shaft (P/N 269A5504-3) or Engine Lower Coupling Drive Shaft Assembly (P/N 269A5504-5 or 80-269A5504-5)12/9/1968
4 en Mandatory Inspection - Main Rotor Mast5/6/1981
en Support Clamp Installation - P/N 269A4869 Exhaust Heater Kit9/11/1968
en Inspection - Tail Rotor Blade Assembly P/N 269A61249/12/1968
1 en Balance Weight Assembly Installed - Low Tip Speed Tail Rotor2/20/1969
en Inspection - Tail Rotor Fork Bolts P/N 269A623510/30/1968
1 en Kit - Floor Beam Reinforcement8/4/1971
en Inspection - Tail Rotor Driveshaft Damper Bearing Block P/N 269A5722 and 269A5722-311/8/1968
1 en Upper Pulley Sleeve, Locknut and Spacer - Belt Drive Transmission Assembly6/20/1972
en Kit Modification - Air Intake Assembly Re: Amphibious Float Landing Installation11/15/1968
en Blade Weight Installation - P/N 269B1145 Series Main Rotor Blades12/10/1968
en Inspection Main Rotor Swashplate Scissor Link Assemblies P/N 269A1335 and 269A13362/21/1969
en Control Cover - Bonding, Upper and Lower3/10/1969
en Inspection, Corrosion Damage - Main Rotor Driveshaft P/N 269A5305-310/8/1969
en Installation - Improved Fuel Injector Assembly10/8/1969
1 en Inspection - Tail Rotor Transmission Assembly, P/N 269A6027 or 369A540010/6/1969
1 en Inspection - Tail Rotor Transmission Assembly, P/N 269A6027 or 369A540010/27/1969
en Periodic and Conditional Inspection - Main Rotor Mast Assembly P/N 269A202010/17/1969
1 en Inspection - Idler Pulley Assembly, Axial Play3/24/1970
1 en Inspection - Main Rotor Mast Internal Corrosion2/16/1972
2 en Mandatory Inspection - Main Rotor Lead-lag and Flapping Hinge Bolts P/N HS1446-10-684/14/1970
1 en Installation - Belt Drive Clutch Cable Guard Kit M100412/14/1972
en Inspection - P/N HS1446-10-68 Bolt, Lead Lag and Flapping Hinge7/31/1970
en Relocation - Oil Pressure Sender P/N 5654912 and Fuel Pressure sender P/N 56549139/4/1970
2 en Static Source Relocation - Modification Kit No. M10059-55/1/1972
en Modification - King KY-90A or KY-95 Transceiver Installation11/9/1970
en Installation - Exhaust Heater Modification Kit No. M10065-11/27/1971
en Retrofit Kit - Alternate Battery Location2/25/1971
en Desensitized Throttle Modification Kit No. M100612/26/1971
1 en 100 Hour Inspection - Engine Exhaust System11/10/1971
en Installation - Mounting Brackets Dual Head Alternator4/16/1971
1 en Mandatory Replacement - Idler Pulley Bearings, P/N 269A5050-529/7/1971
en Main Rotor Transmission Modification Kit No. M100626/9/1971
en Relocation - Warning Indicator Light, Searchlight Control Handle7/6/1971
en Inspection - Main Rotor Hub and Shaft Assemblies P/N 269A5305 and 269A5305-97/19/1971
en Runout (TIR) Inspection - Main Rotor Thrust Bearing P/N 269A5050-737/26/1971
en Mandatory 200-Hour Periodic Replacement - Idler Pulley Bearings9/15/1971
en Modification - Center Back Cushion Assembly P/N 269A409210/8/1971
en Modification - Cyclic Pitch Control Installation10/8/1971
en Inspection - Tail Rotor Control Stop P/N 269A732611/29/1971
en Inspection - Latch, Belt Drive Clutch Handle, P/N 269A221012/15/1971
en Repair of Tail Rotor Blades, P/N 269A6035 Series12/21/1971
en Shim Installation - Tail Rotor Hub at Fork (Teeter) Bearing; Replacement - Tail Rotor Fork Bearing3/27/1972
en Mandatory Inspection - Landing Gear Damper (poppet type) Assembly P/N 269A315010/23/1972
en University Sound System Kit Installation P/N 269A4190-1 and 269A4190-3 Modification of MA-500 Amplifier11/14/1972
en Manually Operated Searchlight Installation P/N 269A4333 Series Wire Replacement Alternator Switch to Circuit Breaker2/26/1973
en Rework - Flotation Gear Installation Kit No. 269A4300-153/17/1973
en Modification and Inspection - Belt Drive Idler Pulley Clutch Assembly P/N 269A5447 and 269A5447-34/6/1973
en Mandatory Serialization Tailboom Support Strut Assembly, PN 269A2015-55/21/1973
2 en Mandatory Inspection of Tail Boom Support Strut Aluminum End Fittings, Part Number 269A2016-3 and 269A2016-5; Replacement of Aluminum End Fittings with Stainless Steel End Fittings (Modification Kit Number M10070)9/1/1976
en Configuration Modification - 2050 Lb. Gross Weight Conversion Kit No. M100789/24/1973
3 en Conversion of 12V to 24V Electrical System - Modification Kit No. M10068 and Installation of 24V, 100 Ampere Capacity Alternator - Kit No. 269A4929-11/24/1986
1 en Wiring Modification - Auxiliary Fuel Pump P/N 269A8311-1 and 269A8303-54/26/1976
en Grease Quantity Requirements - Belt Drive Transmission Lower Pulley Bearing P/N 269A5050-5073/3/1974
3 en Mandatory Inspection and Modification - PN 269A5179 Drive Shaft and Coupling Assembly, Main Rotor Gear Drive Assembly9/17/1977
1 en Rework of Engine Mounting Hangar Assemblies P/N 269A8617 and 269A8618 to Eliminate Possible Engine Crankcase to Hangar Assembly Interference10/3/1975
2 en Dual RPM and Quiet Operation Configuration P/N 269A4957-37/11/1977
en Corrosion Prevention/Inspection - Main Rotor Blade, P/N 269A1165 Blade Tip Weight Area and Tip Cap5/20/1974
en Inspection - Replacement Main Rotor Blade Root Fitting Bolts; Main Rotor Blade Damper Bolts5/23/1974
1 en Mandatory Inspection and Rework - Tail Rotor Control System, Rudder Pedal Installation10/3/1977
en Static System - Line Restrictor and Drain Fitting Modification Kit P/N M10094 and M10093-31/2/1975
en Mandatory Inspection/Replacement Clutch Actuator Retaining Screws2/24/1975
en Mandatory Reinforcement and Field Repair Canopy Slat P/N 269A2297 or 296A2297-73/5/1975
en Mandatory Replacement of Plug P/N 23425-166 in Pinion Assembly P/N 269A5103 and -9 in Main Rotor Gear Drive Assemblies P/N 269A5175, -3 and -5 with Modification Kit P/N M10104; Securing of P/N 269A5050-1 or -20 Roller Bearing3/25/1975
en Inspection/Replacement Searchlight Mount Bolts3/31/1975
en Mandatory Inspection - Fiberglass Tail Rotor Blades, PN 269A6124, 269A6124-9, 269A6035, 269A6035-9, 269A6035-17, 269A6035-19, 269A6035-M, 269ASK15, and 269-61008/28/1975
en Mandatory Inspection and Possible Replacement - Throttle Gear P/N 269A7223; Pilot and Copilot's Collective Pitch Sticks8/11/1975
en Mandatory Inspection - Horizontal Stabilizers Forward Boom Attach Fitting P/N 269A2518-311/7/1975
en Installation of Engine Exhaust Seals P/N 269A825511/7/1975
3 en Mandatory Revised Engine Operating Procedures and Maintenance Practices7/3/1989
en Field Modification and Repair - Manually Operated Searchlight Installation P/N 269A4333-27, -29, -39 and 269A4335-11/23/1976
en Longitudinal Cyclic Trim Assembly - Installation of Limit Switch3/1/1976
1 en Mandatory Wire Modification - Wet/dry AG Kit P/N 269A4153, -3 or -56/18/1976
en Mandatory Inspection - Lateral Cyclic Trim Control Assembly, PN 269A7316-3, -5, -7, -9 or -114/30/1976
en Modification - Left Hand Front Engine Cooling Shroud Panel Assembly P/N 269A8508-15 or -25 and Engine Mounting Bolt Installation5/20/1976
en Field Modification - Fuselage Frame Assembly9/1/1976
1 en Mandatory Field Modification and Interim Inspections - Belt Drive Clutch Linear Actuator Assembly3/8/1977
en Mandatory Periodic Inspection - P/N 269A5179-3 Driveshaft and Coupling Assembly, Main Rotor Gear Drive Assembly P/N 269A5175, -3 or -55/31/1977
en Replacement of P/N 269A8244 or -7 Tailboom Clamp Assembly for Muffler/Resonator Kit P/N 269A8245-37/11/1977
2 en Mandatory Belt Drive Transmission Assembly - Inspection of Lower Pulley Bearings and Shimming of Lower Pulley Bearing Straps: Periodic Torque Check of Forward Bearing Retaining Nut12/7/1979
4 en Mandatory Relocation of Starter Vibrator Circuit Wiring2/23/1982
en Mandatory Installation of Placard P/N 269A4646-191 Declutched Operation Prohibited Above 1600 RPM12/28/1977
en Mandatory Inspection and Possible Replacement Seat Belt and Shoulder Harness Assembly, P/N 269A4345 (American Safety Flight Systems P/N 500987-401)7/15/1978
2 en Mandatory Inspection - Main Transmission Pinion Assembly, PN 269A5103-911/7/1978
en Mandatory Inspection and Rework of LTS Tail Rotor Hub PN 369A1725, 369A1725-5, and 369A1725-5019/1/1978
1 en Mandatory Inspection and Rework of LTS Tail Rotor Hub PN 369A1725, 369A1725-5, and 369A1725-50110/28/1981
en Field Modification of New Four Bolt Attachment Configuration - Tail Skid Tube, Tailboom Adapter and Transmission Housing9/25/1978
2 en Mandatory Replacement of P/N 269A6092 or 369A1602 Tail Rotor Drive Fork Hinge Bolt and P/N 269A6093 or 369A1603 Nut; New Assembly Procedure for Tail Rotor Hub and Drive Fork Unit; Periodic Check of Flapping Hinge Bolt Preload1/20/1981
en Field Repair or Removal - Trim Tab Main Rotor Blade P/N 269A1160 Series, 269A1185 Series and 269B1145 Series2/15/1979
en Replacement of Radio Transmit/Intercom Trigger Switch; Rework of Cyclic Pitch Stick Grip Assembly5/10/1979
en P/N 269A4546-5 Clutch Linear Actuator Assembly - Installation of Drain Hole in Actuator Cover7/20/1979
1 en Field Installation of P/N 269A5160 Anti-Fretting Liner for P/N 269A5179-3 Driveshaft Coupling Assembly and P/N 269A5194 Ring Gear Carrier Assembly12/18/1979
en Mandatory Inspection of Tail Rotor Blade Assembly, PN 269A6035-21 and PN 269A6035-2310/12/1979
en Mandatory Inspection of PN 269A5573-11 H-Frame Assembly12/7/1979
en Mandatory Replacement of Seat Belt Assemblies having Fabric to Metal Latching Devices3/17/1980
en Mandatory Rework of Pilot's Seat Cushion Assembly P/N 269A40397/18/1980
1 en Alternator Out Indicating Light2/28/1986
en Mandatory Periodic Check of Main Rotor Blade Elastomeric Damper Assemblies P/N 269A1290-112/30/1980
en Installation of Transmission Chips Warning Light for P/N 269A6027 Tail Rotor Transmission Assembly9/12/1980
en Mandatory Sealing of Interfaces of Abrasion Strip and Main Rotor Blade Skin1/30/1981
en Mandatory Inspection of P/N 269A5050-73 Thrust Bearing; MRC P/N 9210-UP2-2 S/N 539 thru 6472/23/1981
en Installation of P/N 269A5593-3 H-Frame with P?N 269A5050-78 Bearings4/9/1987
2 en Installation of Main Rotor Blade Elastomeric Damper Assemblies P/N 269A1290-13/25/1987
en Engine Throttle Governor Kit Installation P/N 269A4995-3011/18/1982
en Mandatory Inspection, Replacement and New Torque Requirement - P/N 269A5104 Main Transmission Ring Gear, PN 269A5194 Ring Gear Carrier Assembly and Attach Hardware4/9/1982
en Mandatory Periodic Inspection of Idler Pulley Support Bracket Assembly, PN 269A5575 and PN 269A5575-35/26/1982
3 en Mandatory - Pilot Preflight Check of Tail Rotor Blade Leading Edge Abrasion Strip - Detailed Inspection of Tail Rotor Blade Leading Edge Abrasion Strip Bonding - Installation of Rivets on Tail Rotor Blade Leading Edge Abrasion Strip9/15/1989
en Mandatory Operational Check - Fuel Low Warning System10/12/1982
en Mandatory Inspection and Overhaul of Fuel Shutoff Valve P/N 269A45987/29/1983
1 en Mandatory One-Time Inspection of Main Rotor Driveshaft P/N 269A5304-57/15/1987
en Installation and Replacement of Protective Sleeve (Speedi-Sleeve PN 084956) on Tail Rotor Transmission Output Gearshaft11/10/1986
1 en Mandatory Identification of Throttle Cable Assemblies; Inspection of 269A4683 (BSC) or -3 Throttle Cable Assemblies Having Threaded End Fittings; Replacement of 269A4683 (BSC) and -3 Throttle Cable Assemblies Having Threaded and/or Aluminum End Fittings5/30/1991
en Mandatory Identification of Center Frame Aft Cluster Fittings; Installation of 269A4646-19 Support Strut Placards1/29/1988
en Mandatory Detail Inspections of Upper Pulley Stack-Up8/24/1990
en Mandatory One-Time Inspection of 269A2234-3 and 269A2235-3 Aft Cluster Fittings1/29/1988
en Mandatory Return of Aft Cluster Fittings in Spares Inventory; Dye Penetrant Inspection of Aft Cluster Fittings; Removal of Sample Piece from Aft Cluster Fittings; Daily Visual Inspection of Aft Cluster Fittings1/29/1988
Service Letters
NameRevisionLangSubjectDate
en Annual Disassembly of Aircraft6/1/1987
en Water in Pitot System9/29/1967
en Possibility of Tow-Line-Ring Fouling10/6/1967
en Fire Potential of Fabric Covered Aircraft1/15/1968
en Conversion of Model SGS 2-33 to Model SGS 2-33A3/20/1968
en Retro-Fit Instructions for Installation of 34189D Dive Brake Control Handle4/23/1970
en Retrofit Instructions for Installation of 34186H-1 Elevator Trim Control6/4/1970
en Vertical Surface Flutter5/24/1971
en Vertical Surface Flutter5/24/1971
en Installation Instructions for 1/64th Oversize Main Wing Pins1/20/1972
en Instrument Panel Installation, Lower V-22 Fasteners11/22/1974
en Flutter of Flaps at Approx. 60-70 mph7/9/1975
en Service Letter No. SL-102-1112/9/1976
en SGS 2-33 Wing Strut Attach Options1/20/1978
en Securing of Ailerons During Tie-Down2/11/1978
en Seat-Back Adjustment vs. C.G. Aft Limit8/21/1978
en Spring Assembly, Ratchet Lock Trim10/27/1981
en Fuselage Fabric Cover Separation8/26/1983
en Bellcrank, Aileron - Wing7/13/1983
en Cracking of Tow-Release Slot7/14/1983
en Modification of Aircraft Parts Corporation Starter/Generator9/23/1998
en New Splined Main Rotor Hub and Drive Shaft Design with Increased Time Life7/6/1999
en New Design Main Rotor Drive Shaft Thrust Bearing7/6/1999
en Compliance with Airworthiness Directive 99-17-109/2/1999
en Interface and Programming on the GPS150/150XL to Display Shadin Fuel Flow Data on the GPS5/2/2000
en Modification Kit for 269D/330 Start/Generator Electrical System8/11/2000
en Orientation of Main Rotor Transmission Backlash Shim11/10/2000
en Introduction of New 269A5175-39 Main Rotor Transmission Assembly12/1/2000
en New Design - Tail Rotor Drive Shaft1/25/2002
en Exchange Program for CEF Industries 8618M33 N2 Trim Actuator3/1/2006
en Introduction of New Main Rotor Transmission Assembly and Belt Drive Transmission Assembly Containing an Extended Hub Upper Pulley Assembly7/21/2006
en Structural Enhancement of Tail Rotor Pedal Mount12/8/2008
en Engine/Transmission Oil Cooler Impellers6/11/2009
en C20W Fuel Pump Bypass Check11/13/2009
en Technical Publications - Policy & Price Changes, 20103/11/2010
en 2010 Publications Schedule3/11/2010
en Limited Time Upgrade Offer7/16/2010
en Replacement - Fuel Flow Tubing Assembly10/13/1966
en Parts Replacement - Main Rotor Shaft P/N 5305-3, Hub P/N 5305-5, and Lifting Eye P/N 5305-79/5/1967
en Lycoming Service Bulletin Nos. 340 and 341, Dated August 27, 197111/1/1971
en Lycoming Service Bulletin No. 355, Dated 4 August 1972; Alternator Fan Replacement (Prestolite Bulletin No. ASM-8)9/12/1972
en Changes to Notice and Letter Nomenclature8/24/1990
en Extended Warranty Policy for Pinion and Ring Gears Installed in Main Rotor Transmissions Affected by Service Bulletin B-24411/7/1991
en Service Facilities, for Corrosion Damage Inspection and Repair of the Main Rotor Driveshaft Part Number 269A5305. Reference Service Bulletin B-2435/8/1992
en Main Rotor Rod End Bearings and Lead-Lag Bushings4/29/1993
en New Improved Landing Gear Dampers4/29/1993
en Overhaul Kits for Fuel Shut-Off and Drain Valves4/29/1993
en Improper Maintenance Procedures in Installation of the 269A2324 Series Tail Boom Support Fitting (Saddle Fitting) which Results in a Hazardous Flight Condition4/29/1993
en Additional Lubricants for Lower Coupling Driveshaft4/30/1995
en Strut and Bracket Assembly - Belt Drive Installation10/14/1996
en New Improved Clutch Spring Retainer4/7/1997
en New Improved Clutch Spring Retainer4/7/1997
en New Improved Clutch Spring Retainer4/7/1997
en Compliance of Service Notice N-59, AD 68-21-05 and AD 97-05-06 Against 269A5050-50, -53, and -73 Main Rotor Drive Shaft Thrust Bearing4/15/1997
en Exchange Program for Elastomeric Tail Rotor Fork9/27/1999
en New Electric Driven Airframe Fuel Pump9/27/1999
en Compliance with Airworthiness Directive 99-17-109/2/1999
en Compliance with Airworthiness Directive 99-17-109/2/1999
en New Retirement Time Life for 269A5103-51 Input Pinion and 269A5194 Carrier Assembly Installation in Model 269C-1 Helicopters12/13/1999
en New Retirement Time Life for 269A5103-51 Input Pinion and 269A5194 Carrier Assembly Installation in Model 269C-1 Helicopters12/13/1999
en 300CB Engine Time Between Overhaul Extension6/6/2000
en New SA-269K-101 Fuel System Vent Kits8/10/2000
en New SA-269K-101 Fuel System Vent Kits9/1/2000
en New SA-269K-101 Fuel System Vent Kits9/1/2000
en Introduction of New 269A5175-35 and -37 Main Rotor Transmission Assemblies12/1/2000
en Introduction of New 269A5175-35 and -37 Main Rotor Transmission Assemblies12/1/2000
en Orientation of Main Rotor Transmission Backlash Shim12/1/2000
en Orientation of Main Rotor Transmission Backlash Shim12/1/2000
1 en New Design - Tail Rotor Drive Shaft1/25/2002
1 en New Design - Tail Rotor Drive Shaft1/25/2002
1 en New Design - Tail Rotor Drive Shaft1/25/2002
en Special Inspection of Main Rotor Transmission Magnetic Plug8/22/2001
en Special Inspection of Main Rotor Transmission Magnetic Plug8/22/2001
en Special Inspection of Main Rotor Transmission Magnetic Plug8/22/2001
en Introduction of New Lower Pulley Bearing Removal Tool9/11/2001
en Introduction of New Lower Pulley Bearing Removal Tool9/11/2001
en Optional Anti-Collision Light Conduit in New 269A2320-17 Tailboom Assemblies9/11/2001
en Aft Cluster Fitting Modification Kit (P/N SA-269K-0106-1)9/13/2002
en Upgrade of 269A4564-5 Linear Actuator9/13/2005
en Verification of Mandatory Cluster Fitting Replacement9/13/2005
en Function of Tail Rotor Driveshaft Damper Block9/26/2008
en Function of Tail Rotor Driveshaft Damper Block9/26/2008
en Retirement of Certain Engine and Rotor Tachometer1/9/2009
en Retirement of Certain Engine and Rotor Tachometer1/9/2009
en ELT Direct Replacement Authorization6/17/2009
en ELT Direct Replacement Authorization6/17/2009
en Technical Publications - Policy & Price Changes, 20103/11/2010
en Technical Publications - Policy & Price Changes, 20103/11/2010
en 2010 Publications Schedule3/11/2010
en 2010 Publications Schedule3/11/2010
Service Notices
NameRevisionLangSubjectDate
1 en Mandatory Modification - Fuel Injection Lines, Cylinders No. 1 and 38/2/1966
2 en Mandatory 25 Hour Inspection - Main Rotor Blade8/7/1972
2 en Mandatory Kit Installation - Cabin Sealing - RE: Carbon Monoxide Ingestion12/13/1967
1 en Mandatory Engine Lower Coupling Driveshaft P/N 269A5504-3 or Engine Lower Coupling Driveshaft P/N 269A5504-5 or 269A5504-112/9/1968
en Mandatory Inspection and Retirement Main Rotor Thrust Bearing Part Number 269A5050-50 and -51. Inspection Field Modification - Main Rotor Mast Thrust Bearing Nut and Spacer Tube10/9/1968
1 en Mandatory Inspection - Tail Rotor Transmission Assembly P/N 269A6027 or 369A540010/6/1969
2 en Mandatory Kit Installation - Main Rotor Thrust Bearing M100443/22/1971
3 en Mandatory Inspection - Tailboom Center Attach Fitting (PN 269A2324), and Center Frame Aft Cluster Fitting (PN 269A2234 and 269A2235)9/19/1977
3 en Mandatory Installation - Adapter Mounted Idler Pulley Clutch Assembly Kit No. 269A54476/18/1976
2 en Mandatory Installation - Pitch Control Links, Low Tip Speed Tail Rotor Assembly (Kit No. M10067)3/25/1975
1 en Mandatory Replacement - Idler Pulley Bearings, P/N 269A5050-629/7/1971
en Mandatory 200-Hour Periodic Replacement - Idler Pulley Bearings9/15/1971
en Mandatory Serialization - Tailboom Support Assembly P/N 269A2015-55/21/1973
en Mandatory Wiring Modification - Integrated Dual Communication Console (ATI)7/29/1974
en Mandatory Inspection - Impeller Bolt Installation12/4/1974
en Mandatory Inspection and Rework of Main Transmission Strut Assembly P/N 269A501512/4/1974
1 en Mandatory Inspection - Main Rotor Mast; Left and Right Mast Support Tubes; and Replacement of all Attaching Hardware10/3/1975
en Mandatory Inspection/Replacement Clutch Actuator Retaining Screws2/24/1975
en Mandatory Inspection - Fiberglass Tail Rotor Blades P/N 269A6124, -9, 269A6035, -9, -17, -19, -M, 269ASK15 and 269-61008/28/1975
en Mandatory Inspection - Lateral Cyclic Trim Control Assembly P/N 269A7316-3, -5, -7, -9 or -114/30/1976
1 en Mandatory Initial Installation of Part Number 269125194 Main Rotor Drive Ring Gear Carrier Assembly; Modification of Part Number 269A5182 Main Gear Drive Upper Housing Assembly5/31/1977
en Mandatory Inspection - Throttle Control Cable Assembly8/8/1977
2 en Mandatory Belt Drive Transmission Assembly Inspection of Lower Pulley Bearings and Shimming of Lower Pulley Bearing Straps; Periodic Torque Checks of Forward Bearing Retaining Nut12/7/1979
en Mandatory Inspection of Sump Cap Attach Hardware - Main and Auxiliary Fuel Tank Assemblies9/19/1977
1 en Mandatory Rework of Main Rotor Mast Assembly for Improved Corrosion Protection8/12/1981
en Mandatory 100 Ampere Capacity Alternator Installation - Torque Inspection Of Pivot Bolts P/N AN7-12 and NAS1302-29/28/1979
en Mandatory Inspection of Tail Rotor Blade Assembly P/N 269A6035-21 and -2310/12/1979
en Mandatory P/N 269A6050 Series and 269A1800-3 - Tail Rotor Pitch Control Assembly - Seating of Bearing Inner Race; Torque Increase for P/N 269A6258 Locknut11/26/1979
en Mandatory Inspection of P/N 269A5573-11 H-Frame Assembly12/7/1979
en Mandatory Identification and Possible Rework of Seat Belt and Shoulder harness Assemblies7/11/1980
en Mandatory Field Inspection and Repair of Tail Rotor Transmission Main Housing Assembly P/N 369A54014/15/1981
1 en Mandatory Instrument Cluster 3-Pack Conversion - AC to Rochester (28 volt)4/19/1982
1 en Mandatory Inspection and Retirement - PN 269A5179 and 269A5179-3 Drive Shaft and Coupling Assembly, Main Rotor Gear Drive Assembly PN 269A5175 Basic, -3 or -58/17/1982
en Mandatory Periodic Inspection of Idler Pulley Support Bracket Assembly, PN 269A5575 and 269A5575-35/26/1982
3 en Mandatory Pilot Preflight Check of Tail Rotor Blade Leading Edge Abrasion Strip. Detailed Inspection of Tail Rotor Blade Leading Edge Abrasion Strip Bonding. Installation of Rivets on Tail Rotor Blade Leading Edge Abrasion Strip9/15/1989
1 en Mandatory Periodic Check and Initial Replacement - Belt Drive Pulley H-Frame Tie Bar Bracket Assembly, PN 269A5517-711/21/1983
en Mandatory Corrosion Inspection - Transmission Oil Pressure Switch P/N 269A45763/15/1983
4 en Mandatory Installation of New Higher Strength Tail Rotor Blade Retention Bolt P/N LWB22-6-22, LWB22D-6-22 or HS4441-6-22; and Inspection of Tail Rotor Blade Attachment Bushing Holes2/12/1999
1 en Mandatory Main Rotor Damper Pitch Bearing Case Attach Hole Inspection and Spacer (PN 269A1207) Installation9/2/1986
en Mandatory Bungee Installation Kit P/N M10123 - Collective Pitch Stick12/15/1983
en Mandatory One-Time Inspection of Main Rotor Hubs and Shafts; P/N 269A5305 and -95/7/1984
en Mandatory Installation - P/N 269A5192 Pinion Aft Bearing Oil Strainer Assembly in Main Transmission Assemblies Built Prior to 19691/9/1985
en Mandatory One-Time Inspection and Rework of P/N 269A4262 Inertia Reel Shoulder Harness Assemblies and Installation1/9/1985
en Mandatory Inspection of Main Transmission Assembly, P/N 269A5175-11, -13, -15 and -172/28/1986
en Mandatory Inspection of Throttle and Governor Control Cable Assemblies2/28/1986
en Mandatory Inspection and Rework of Tail Rotor Pitch Control Link Assembly, P/N 269A6091-5 and 369A1807-72/28/1986
en Mandatory One-Time Inspection of Bolt Holes at Tail Rotor Transmission Attachment Area3/30/1987
1 en Mandatory Inspection and Sealing of Main Rotor Blade Elastomeric Dampers3/23/1987
en Mandatory Improved Methods for Checking Idle Mixture and Idle Speed. Operational Check of Fuel System2/23/1987
en Mandatory Visual Check to Ensure that Proper Thrust Bearing Tube is Installed11/19/1986
en Mandatory Identification and Possible Replacement of Collective Pitch Mixer Bellcrank6/16/1987
en Mandatory Identification and Possible Replacement of Radio Communication Relay8/22/1986
en Mandatory United Instruments, Inc. Altimeters (SZA Part No. 369H4505)4/17/1987
en Mandatory Identification and Possible Replacement of Tail Rotor Fork Bolt11/19/1986
en Mandatory One-Time Inspection of Belt Drive Upper Pulley Assembly4/9/1987
1 en Mandatory Identification of Throttle Cable Assemblies; Inspection of P/N 269A4683(BSC) or -3 Throttle Cable Assemblies having Threaded End Fittings; Replacement of P/N 269A4683(BSC) or -3 Throttle Cable Assemblies having Threaded and/or Aluminum End Fitting5/30/1991
en Mandatory Periodic Inspection of Engine Lower Coupling Driveshaft Boot P/N 269A547311/3/1987
en Mandatory One-Time X-ray Inspection of Tail Rotor Blade Spar P/N 269A6035-21 and -233/10/1988
en Mandatory Daily Visual Inspection of Droop Stop Nut; One-time Dye Penetrant Inspection of Droop Stop Nut P/N 269A13409/29/1987
en Mandatory Reduced Service Lives for P/N 269A6065 and 369A1706 Tail Rotor Retention Strap Assemblies11/3/1987
en Mandatory Update of Model 269B and 269C Pilot's Flight Manual; Installation of 269A9958-5 and 269A9928-7 Center Cover Support Bracket9/21/1988
en Mandatory Magnetic Particle Inspection of Main Transmission Pinion Assembly11/3/1987
en Mandatory Identification of Center Frame Aft Cluster Fittings; Installation of P/N 269A4646-19 Support Strut Placards1/29/1988
en Mandatory Replacement of Auxiliary Fuel Quantity Placard; Installation of P/N 269A4106-3 Instrument Cluster as Replacement for P/N 269A4106 Instrument Cluster1/22/1988
en Mandatory One-Time Inspection of P/N 269A2234-3 and 269A2235-3 Aft Cluster Fittings1/29/1988
en Mandatory Return of Cluster Fittings in Spares Inventory; Dye Penetrant Inspection and Removal of Sample Piece from Aft Cluster Fittings; Daily Visual Inspection of Aft Cluster Fittings1/29/1988
en Mandatory Textron Lycoming Service Bulletins: No. 480 Oil and Filter Change and Cleaning No. 369G Engine Inspection after Overspeed or Overboost9/21/1988
en Mandatory Inspection and Possible Replacement of P/N 33-199-915 Fuel Filter Element (Wire Mesh Screen without Stiffeners)9/21/1988
en Mandatory Identification of Beld Drive Clutch Spring Assembly, Inspection of Belt Drive Clutch Engagement Cable, Field Retrofit of 269A5483-1 and 269A5483-3 Beld Drive Clutch Spring Assemblies with New Cable Sub-Assemblies7/3/1989
en Mandatory Inspection of Main Rotor Pitch Bearing Snap Ring Lockwasher7/3/1989
1 en Mandatory Part Number Conversion of 369 Series Part Numbers to 269 Series Part Numbers that are Used on 269 Series Helicopters2/20/1992
en Mandatory Identification and Possible Repair of Precision Airmotive Fuel Injector Model RSA-7AA1, Precision Airmotive Service Bulletin PRS-925/31/1989
en Mandatory Inspection of Tail Rotor Driveshaft Damper block Assembly P/N 269A2330-310/6/1989
Weight & Balance Information
NameRevisionLangSubjectDate
en SGU 2-226/30/1964
en SGS 1-23
en SGS 1-266/30/1969
en SGS 1-2312/31/2011
en SGS 2-325/31/1965
en SGS 2-33A6/30/1974
en SGS 1-345/31/1971
en SGS 1-34R6/30/1971
en SGS 1-352/29/1976
en SGS 1-35C4/30/1975
en SGS Series - Balance Limits - Control Surfaces4/30/1995
en SGS 1-366/30/1980