The Aviation DataBase: Service Information: Airbus Helicopter
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Airworthiness Limitations
NameRevisionLangSubjectDate
9 en AS 332 L17/27/2022
10 en AS 355 E9/14/2020
10 en AS 355 F9/14/2020
10 en AS 355 F19/14/2020
10 en AS 355 N9/14/2020
11 en AS 355 F29/14/2020
9 en AS 355 NP 2/4/2019
2 en EC135 P1, P2, P3, T1, T2, T3 (limited to CDS, CPDS, P2+, T2+)4/6/2021
2 en EC135 P3H, T3H4/6/2021
14 en EC 225 LP6/1/2022
1 en MBB-BK117 D-312/14/2021
Alert Telexes: AS/SA 330
NameRevisionLangSubjectDate
en Main Rotor - Tail Rotor - Intermediate Gearbox - Correction of Operating Hours8/13/2002
Alert Telexes: AS/SA 332
NameRevisionLangSubjectDate
2 en Time Limits - MGB - Bevel Gear Check2/3/2003
1 en Electrical Multi-Purpose Air Intake (MPAI) - Risk of Non-Inflation of Bullet Seal4/10/2002
4 en Fuselage - Check on Frame 52957/11/2001
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours8/13/2002
en Engine Fuel and Control - Fuel Governor - Abnormally Affecting Engine Fuel Flow Limit Adjustment10/2/2002
Alert Telexes: AS/SA 341
NameRevisionLangSubjectDate
1 en Main Rotor Head - Flight Restriction for Torsion Tie Bars12/11/2001
en TRW/Breeze 300 lb (136 kg) Electric Hoist Installation - Pyrotechnic Squib Failure7/8/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours8/13/2002
Alert Telexes: AS/SA 342
NameRevisionLangSubjectDate
1 en Main Rotor Head - Flight Restriction for Torsion Tie Bars12/11/2001
en TRW/Breeze 300 lb (136 kg) Electric Hoist Installation - Pyrotechnic Squib Failure7/8/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours8/13/2002
Alert Telexes: AS/SA 350
NameRevisionLangSubjectDate
en Limitations - Tail Rotor Hub Pitch Change Plate Bearing2/22/2001
en Limitations - Main Servo Controls11/15/2001
en Rotor(s) - Separation of Bush from STAR FLEX Star Arm End11/13/2001
en Time Limits Load Release Unit - Untimely Load Release12/20/2001
en Time Limits - Tail Rotor Blades - Skin Check12/17/2001
en Sliding Door - Check of Sliding Door Aft Guide Roller and Middle Rail5/16/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours8/13/2002
en Limitations - "TRW SAMM" Main Servocontrols4/29/2002
Alert Telexes: AS/SA 355
NameRevisionLangSubjectDate
en Limitations - Main Servo Controls11/15/2001
en Limitations - Tail Rotor Hub Pitch Change Plate Bearing2/22/2001
1 en Rotor(s) - Separation of Bush from STAR FLEX Star Arm End11/13/2001
en Time Limits - Tail Rotor Blades - Skin Check12/17/2001
en Sliding Door - Check of Sliding Door Aft Guide Roller and Middle Rail5/16/2002
en Rotor Drives - MGB Lubrication Pump6/6/2002
1 en Rotor Drives - MGB Lubrication Pump11/27/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours8/13/2002
1 en Main Rotor Drive - Main Gearbox Free-Wheel12/19/2003
2 en Main Rotor Drive - Main Gearbox Free-Wheel2/4/2004
en Limitations - "TRW SAMM" Main Servocontrols4/29/2002
Alert Telexes: AS/SA 360
NameRevisionLangSubjectDate
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
Alert Telexes: AS/SA 365
NameRevisionLangSubjectDate
en Time Limits Load Release Unit - Untimely Load Release12/20/2001
en Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Base Plate2/5/2004
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
en Fuel - Air Vent Hoses1/14/2003
en Main Landing Gears Wheel Brake Hydraulic Hose Bursting7/31/2002
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours8/13/2002
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours8/13/2002
en Limitations - "TRW SAMM" Main Servocontrols4/29/2002
Alert Telexes: AS/SA 366
NameRevisionLangSubjectDate
en Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Base Plate2/5/2004
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
en Fuel - Air Vent Hoses1/14/2003
en Limitations - "TRW SAMM" Main Servocontrols4/29/2002
Alert Telexes: AS/SA 532
NameRevisionLangSubjectDate
2 en Time Limits - MGB - Bevel Gear Check2/3/2003
1 en Electrical Multi-Purpose Air Intake (MPAI) - Risk of Non-Inflation of Bullet Seal4/10/2002
4 en Fuselage - Check on Frame 52957/11/2001
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours8/13/2002
en Engine Fuel and Control - Fuel Governor - Abnormally Affecting Engine Fuel Flow Limit Adjustment10/2/2002
Alert Telexes: AS/SA 550
NameRevisionLangSubjectDate
en Limitations - Tail Rotor Hub Pitch Change Plate Bearing2/22/2001
en Limitations - Main Servo Controls11/15/2001
1 en Rotor(s) - Separation of Bush from STAR FLEX Star Arm End11/13/2001
en Time Limits Load Release Unit - Untimely Load Release12/20/2001
en Time Limits - Tail Rotor Blades - Skin Check12/17/2001
en Sliding Door - Check of Sliding Door Aft Guide Roller and Middle Rail5/16/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours8/13/2002
Alert Telexes: AS/SA 555
NameRevisionLangSubjectDate
en Limitations - Tail Rotor Hub Pitch Change Plate Bearing2/22/2001
en Rotor(s) - Separation of Bush from STAR FLEX Star Arm End11/13/2001
en Time Limits - Tail Rotor Blades - Skin Check12/17/2001
en Sliding Door - Check of Sliding Door Aft Guide Roller and Middle Rail5/16/2002
en Rotor Drives - MGB Lubrication Pump6/6/2002
1 en Rotor Drives - MGB Lubrication Pump11/27/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours8/13/2002
1 en Main Rotor Drive - Main Gearbox Free-Wheel12/19/2003
2 en Main Rotor Drive - Main Gearbox Free-Wheel2/4/2004
en Limitations - "TRW SAMM" Main Servocontrols4/29/2002
Alert Telexes: AS/SA 565
NameRevisionLangSubjectDate
en Time Limits Load Release Unit - Untimely Load Release12/20/2001
en Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Base Plate2/5/2004
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
en Fuel - Air Vent Hoses1/14/2003
en Main Landing Gears Wheel Brake Hydraulic Hose Bursting7/31/2002
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours8/13/2002
en Limitations - "TRW SAMM" Main Servocontrols4/29/2002
Alert Telexes: EC120
NameRevisionLangSubjectDate
1 en Tail Rotor Drive - Tail Rotor Drive Shaft Damper1/27/2004
en Rotor Flight Control - Limited Cyclic Pitch Control Stick Travel7/8/2002
Alert Telexes: EC130
NameRevisionLangSubjectDate
1 en Rotor(s) - Separation of Bush from STAR FLEX Star Arm End11/13/2001
en Time Limits - Maintenance Checks - Functional Check of Twist Grip Assembly6/30/2005
en Electrical Power - Battery Overheat Sensing Circuit Wiring12/20/2005
en Limitations - "TRW SAMM" Main Servocontrols4/29/2002
Alert Telexes: EC155
NameRevisionLangSubjectDate
en Time Limits Load Release Unit - Untimely Load Release12/20/2001
en Time Limits - Check of Main Rotor Blade/Tip Cap Attachment11/3/2003
en Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Base Plate2/5/2004
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
1 en Indicating and Recording Systems - Landing Gear Extension Inoperative9/19/2002
en Main Landing Gears Wheel Brake Hydraulic Hose Bursting7/31/2002
en Doors - Check and Adjustment of Doors3/11/2002
1 en Doors - Cabin Sliding Door9/24/2003
Flight Manuals
NameRevisionLangSubjectDate
5 en BO 105 C/CS3/12/2010
5 en BO105 CB/CBS3/12/2010
11 en BO105 CB/CBS
en EC 155 B
en EC 155 B1
en EC 155 B1
18 en MBB-BK117 A-311/26/2015
18 en MBB-BK117 A-39/22/2006
17 en MBB-BK117 A-411/26/2015
17 en MBB-BK117 A-49/22/2006
21 en MBB-BK117 B-1 and MBB-BK117 B-1D11/26/2015
21 en MBB-BK117 B-1 and MBB-BK117 B-1D9/22/2006
22 en MBB-BK117 B-2 and MBB-BK117 B-2D11/26/2015
22 en MBB-BK117 B-2 and MBB-BK117 B-2D9/22/2006
31 en MBB-BK117 C-1 and MBB-BK117 C-1D11/26/2015
31 en MBB-BK117 C-1 and MBB-BK117 C-1D9/22/2006
en MBB-BK117 C-2
en MBB-BK117 C-2e
en MBB-BK117 D-2 (Heli Step 2)
en MBB-BK117 D-2 (Heli Step 2)3/28/2017
en MBB-BK117 D-2
en MBB-BK117 D-3
en SA 365N
en SA 365N1
en SA 365N2
en SA 365N3
en SA 365N3
Maintenance Manuals
NameRevisionLangSubjectDate
16, Up2 en EC1307/3/2022
16, Up2 en EC1307/3/2022
6 en AS 350 B19/28/2020
13 en AS 350 B24/5/2021
13 en AS 350 B34/5/2021
6 en AS 350 BA9/28/2020
6 en AS 350 D9/28/2020
31 en BO 10512/15/2020
7 en BO 105 LS A-311/27/2018
4 en BO 105 LS A-3 Superlifter3/28/2019
12 en EC 130 B44/5/2021
10 en EC 130 T24/5/2021
en EC1358/1/2008
Safety Notices
NameRevisionLangSubjectDate
1 en Stabilizers - Fins - Failure of Spar of Upper Vertical Fin4/21/2011
Service Bulletins: AS/SA 313
NameRevisionLangSubjectDate
en Limitations: Main Gearbox A, Frames. Allocating a Service Life Limit to Repair Eye End-Fittings6/8/1983
en Mandatory Inspection of Tail Rotor Pitch Change Control Rod5/2/1984
en Alert Rotor Drive - Bevel Gear Check7/18/2001
en Mandatory Time Limits - Check of Free Wheel Lubrication2/14/1979
1 en Mandatory Time Limits - Main Rotor Blade Root Skin and Reinforcement Strip Bonding Check9/28/1998
Iss 2 en Mandatory Rotors - Improvement of Sealing for Free Wheel and MGP/Free Wheel/Clutch Unit Coupling2/14/1979
en Mandatory Alert Rotors - Free-Wheel Assembly - Check of Free-Wheel Cage3/23/2011
Service Bulletins: AS/SA 3130
NameRevisionLangSubjectDate
2 en Mandatory Stabilizers - Reinforcement of Spar4/25/1997
Service Bulletins: AS/SA 315
NameRevisionLangSubjectDate
en Alert Rotor Drive - Bevel Gear Check7/18/2001
1 en Mandatory Time Limits - Main Rotor Blade Root Skin and Reinforcement Strip Bonding Check9/28/1998
en Alert Time Limits - Check of Lower Pinion-to-MGB Vertical Shaft Bevel Gear Housing Coupling Splines8/7/2001
en Mandatory Alert Time Limits - Maintenance Checks - Oxygen Cylinders8/16/2006
3 en Mandatory Stabilizers - Reinforcement of Spar4/25/1997
en Mandatory Alert Rotors - Free-Wheel Assembly - Check of Free-Wheel Cage3/23/2011
Service Bulletins: AS/SA 316
NameRevisionLangSubjectDate
1 en Main Gearbox "A" Frames5/30/1985
en Alert Rotor Drive - Bevel Gear Check7/18/2001
en Time Limits - Check of Free Wheel Lubrication2/14/1979
3 en Mandatory Time Limits - Inspection of AU4 G1 Inflating Head Installed on Emergency Flotation Gear Nitrogen Cylinder5/4/1998
2 en Mandatory Time Limits - Monitoring of Horizontal Stabilizer Spar Tubes12/19/1997
1 en Mandatory Time Limits - Main Rotor Blade Root Skin and Reinforcement Strip Bonding Check9/28/1998
en Alert Time Limits - Check of Lower Pinion-to-MGB Vertical Shaft Bevel Gear Housing Coupling Splines8/1/2001
Iss 2 en Mandatory Rotors: Improvement of Sealing on Freewheel and MGB/Freewheel/Clutch Unit Couplings2/14/1979
1 en Mandatory Rotors - 1) Checking Position of Root Reinforcement Bond on Main Rotor Blades P/Ns; 2) Running a Sealant Bead Around Attachment Fittings of Main Rotor Blades11/17/1993
en Mandatory Alert Rotors - Free-Wheel Assembly - Check of Free-Wheel Cage3/23/2011
Service Bulletins: AS/SA 3160
NameRevisionLangSubjectDate
1 en Mandatory Rotors - 1) Checking Position of Root Reinforcement Bond on Main Rotor Blades P/Ns; 2) Running a Sealant Bead Around Attachment Fittings of Main Rotor Blades11/17/1993
Service Bulletins: AS/SA 318
NameRevisionLangSubjectDate
en Alert Rotor Drive - Bevel Gear Check7/18/2001
en Time Limits - Check of Free Wheel Lubrication2/14/1979
1 en Mandatory Time Limits - Main Rotor Blade Root Skin and Reinforcement Strip Bonding Check9/28/1998
en Alert Time Limits - Check of Lower Pinion-to-MGB Vertical Shaft Bevel Gear Housing Coupling Splines8/1/2001
Iss 2 en Mandatory Rotors: Improvement of Sealing on Freewheel and MGB/Freewheel/Clutch Unit Couplings2/14/1979
en Mandatory Alert Rotors - Free-Wheel Assembly - Check of Free-Wheel Cage3/23/2011
Service Bulletins: AS/SA 3180
NameRevisionLangSubjectDate
2 en Mandatory Stabilizers - Reinforcement of Spar4/25/1997
Service Bulletins: AS/SA 319
NameRevisionLangSubjectDate
1 en Main Gearbox "A" Frames5/30/1985
en Alert Rotor Drive - Bevel Gear Check7/18/2001
en Time Limits - Check of Free Wheel Lubrication2/14/1979
3 en Mandatory Time Limits - Inspection of AU4 G1 Inflating Head Installed on Emergency Flotation Gear Nitrogen Cylinder5/4/1998
2 en Mandatory Time Limits - Monitoring of Horizontal Stabilizer Spar Tubes12/19/1997
1 en Mandatory Time Limits - Main Rotor Blade Root Skin and Reinforcement Strip Bonding Check9/28/1998
en Alert Time Limits - Check of Lower Pinion-to-MGB Vertical Shaft Bevel Gear Housing Coupling Splines8/1/2001
Iss 2 en Mandatory Rotors - Improvement of Sealing on Freewheel and MGB/Freewheel/Clutch Unit Couplings2/14/1979
1 en Mandatory Rotors - 1) Checking Position of Root Reinforcement Bond on Main Rotor Blades P/Ns; 2) Running a Sealant Bead Around Attachment Fittings of Main Rotor Blades11/17/1993
en Mandatory Alert Rotors - Free-Wheel Assembly - Check of Free-Wheel Cage3/23/2011
Service Bulletins: AS/SA 330
NameRevisionLangSubjectDate
1 en Mandatory Limitations - Tail Rotor Pitch Change Spider Check2/14/1996
1 en Mandatory Limitations - Separation of Grounds for Transformer-Rectifiers with or without Shunts3/13/1997
en Alert Limitations - Fittings & Mounts - Periodic Replacement of Main Gear Box RH Rear Fitting & Attachment Screws6/23/2021
3 en Mandatory Time Limits - Inspection of AU4 G1 Inflating Head Installed on Emergency Flotation Gear Nitrogen Cylinder5/4/1998
4 en Mandatory Monitoring of Metal Tail Rotor Blades12/18/1990
2 en Alert Time Limits - Tail Rotor Pitch Change Rod Bearing Check1/18/2001
1 en Alert Time Limits - Checking TGB for Angular Play1/11/2001
en Alert Time Limits - Tail Rotor Blade De-Icing Rotating Collector6/8/2001
en Emergency Alert Main Rotor Drive - Readjusting or Checking Tightening Torque Load of Attachment Hardware and Checking Integrity of Main Gear Box Input Flexible Couplings3/3/2008
1 en Emergency Alert Main Rotor Drive - Readjusting or Checking Tightening Torque Load of Attachment Hardware and Checking Integrity of Main Gear Box Input Flexible Couplings10/22/2015
en Emergency Alert Rotors - MGB Oil Cooling Fan - Checking Clearance between a Fan Blade and Guide Vane Bearing Housing7/12/2010
1 en Emergency Alert Rotors - MGB Oil Cooling Fan - Checking Clearance between a Fan Blade and Guide Vane Bearing Housing7/24/2020
2 en Emergency ROTORS - MGB Oil Cooling Fan - Checking Clearance between a Fan Blade & Guide Vane Bearing Housing7/25/2022
1 en Alert Limits - Maintenance Checks - Check of Tail Rotor Control Turnbuckle6/5/2013
en Emergency Alert Time Limits - Maintenance Checks - Tail Rotor - Inspection of Skin of Metal Tail Rotor Blades3/21/2016
1 en Alert Time Limits - Maintenance Checks - Main Rotor Drive - Check of MGB Oil Sump and Particle Detector12/10/2018
3 en Alert Time Limits - Maintenance Checks - Main Rotor Drive - Check of MGB Oil Sump and Particle Detector10/4/2021
en Alert Time Limits - Maintenance Checks - Rotors - Check of Chip Detectors of Main Rotor Hub5/27/2019
en Alert Time Limits - Maintenance Checks - Tail Rotor - Replacement of Flapping Hinge of Tail Rotor Blades4/8/2020
3 en Emergency Alert Equipment and Furnishings - Hydraulic Hoist - Jamming of Cable on Structure7/6/2011
1 en Ice and Rain Protection - Installation of a Blanking Cover on Multi-Purpose Air Intake2/3/2000
en Ice and Rain Protection - Heat-Insulation of Double P2-Air System for Multi-Purpose Air Intakes2/3/2000
1 en Alert Ice and Rain Protection - Check of Main Rotor Blade De-Icing System Distributor Retaining Clamp and Attachment Screw8/21/2008
en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/3/2014
1 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door3/11/2020
en Alert Doors - Side Stairway Door - VIP Door Locking Improvement3/11/2020
en Alert Fuselage - Primary Structure - Check of Suspension Bars Attachment Plates4/3/2023
1 en Mandatory Cowlings - Inclined Drive Shaft Fairing Hinge Pin Stop on Tail Boom2/27/1996
en Alert Windows - Rear Hatch Emergency Exit - Check of Press-Stud on Rear Hatch Emergency Exit Jettisoning System8/10/2015
3 en Mandatory Tail Rotor Drive - Improvement in Attachment of Bonding Braids on TRH2/18/1991
en Rotors - MGB Oil Cooling Fan - New Bearings of Fan Bearing Rotor6/25/2018
en Alert Main Gear Box (MGB) - Particle Detector - Replacement of Particle Detector4/4/2019
en Alert Rotors - Oil Cooling - Increased Reliability of Fan-Bearing Assembly & Flexible Duct7/25/2022
en Alert Rotors - Main Gearbox - Replacement of Second Stage Planet Gear Assemblies10/4/2021
en Alert Rotors - Main Gear Box - Check Correct Assembly of Flange Assembly Coupling6/30/2022
1 en Emergency Alert Rotor Flight Controls - Servo-Controls - Crimping of End-Fitting Ball Joints12/5/2012
en Alert Rotor Flight Controls - Main Rotor Controls - Improvement of Protection of Stop Support of Collective Levers2/22/2022
1 en Mandatory Alert Engine Controls - Fuel Shut-Off Control Lever - Tangential Gearbox Jamming3/22/2007
en Emergency Alert Rotors - Check of Internal Diameter of Bush Retainings9/29/2023
Service Bulletins: AS/SA 332
NameRevisionLangSubjectDate
1 en Mandatory Limitations - Tail Rotor Pitch Change Spider Check2/14/1996
en Mandatory Limitations - Spindles and Flapping Hinge Pins3/26/1996
1 en Mandatory Limitations - Check of Intermediate Gear Box Front Support9/10/1997
en Mandatory Limitations - Single-Pole Circuit Breaker Checks6/30/1997
en Mandatory Limitations - Pilot's and Copilot's Door8/5/1997
1 en Alert Limitations - Check of Bay-Pass Valve Closing on Fuel Filters3/15/2001
1 en Mandatory Limitations - Checking Metal Horizontal Stabilizer Spar Tube and its Laminate Bush11/24/1999
en Alert Limitations - Prohibits Use of Seats Equipped with Harnesses Fitted with a Belt Buckle Blanking Plug, in Flight4/15/2008
en Mandatory Alert Limitations - Hydraulic Pump8/23/2007
en Emergency Alert Limitations - Sling - Longitudinal Beams Y3503/19/2012
en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Any Seat"8/26/2014
1 en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Any Seat"8/9/2017
1 en Emergency Alert Limitations- Fittings and Mounts - Periodic Replacement of Fittings and Attachment Components of Main Gearbox (MGB) Suspension Bars8/25/2017
1 en Emergency Alert Limitations - Lateral Sliding Plug Doors - Prohibition Against Jettisoning of RH Lateral Sliding Plug Door for Helicopters Equipped with Hoist Arm6/28/2018
1 en Emergency Alert Limitations - 12 Hz Vibratory Phenomenon on Specific Helicopter Configuration12/4/2019
1 en Alert Limitations - MGB Free Wheel Shaft - Free Wheel Shaft of Main Gear Box (MGB)7/29/2020
en Emergency Alert Limitations - 12 Hz Vibratory Phenomenon on Specific Helicopter Configuration12/4/2019
en MGB Epicyclic Module Upper Casing Bearing Attachment Bolts12/21/1994
4 en Mandatory Time Limits - Shorter Time Limit for Main Rotor Blade Checks4/6/2000
3 en Alert Time Limits - Checking Bearing on Tail Rotor Pitch-Control Rod1/18/2001
1 en Alert Time Limits - Checking TGB for Angular Play1/11/2001
1 en Mandatory Time Limits/Maintenance Checks - Tail Rotor Blade De-Icing Rotating Collector8/16/1999
en Mandatory Time Limits - Check for Interference between Flexible Mounting Plate and Shims on Transmission Deck7/8/1999
en Alert Time Limits - Check of Non-Rotating Scissors Hinges on Main Rotor Shaft2/1/2001
en Alert Time Limits - Maintenance Checks - Check of Attachment of Front and Rear MGB Suspension Bar Attaching Fittings3/28/2006
en Alert Time Limits - Maintenance Checks - Check of Outer Skin and Butt Strap at Frame 52952/20/2008
2 en Emergency Alert Time Limits - Maintenance Checks - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification4/23/2009
3 en Emergency Alert Time Limits - Maintenance Checks - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification7/13/2012
1 en Alert Time Limits - Maintenance Checks - Check of Tail Rotor Control Turnbuckle6/5/2013
1 en Alert Time Limits - Maintenance Checks - Visual Check of Splicing of Frame X52952/9/2021
1 en Alert Time Limit - Maintenance Checks - Yaw Control - Check of Yaw Damper Support2/10/2021
en Alert Time Limits - Maintenance Checks - Main Rotor Blades - Periodic Visual Check of Condition of Blade Attachment Pins12/22/2014
2 en Alert Time Limits - Maintenance Checks - Main Rotor Blades - Periodic Visual Check of Condition of Blade Attachment Pins6/26/2018
1 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System2/8/2018
2 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System4/10/2019
3 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System2/10/2020
4 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System9/23/2020
2 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters10/7/2016
3 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters2/25/2017
4 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters3/17/2017
5 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters6/23/2017
6 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters7/27/2017
1 en Alert Time Limits - Maintenance Checks - Main Rotor Drive - Check of MGB Particle Detectors & Flight Ban of 2nd Stage Type A Planet Gears2/3/2020
en Alert Time Limits - Maintenance Checks - Replacement of Flapping Hinge of Tail Rotor Blades4/8/2020
3 en Emergency Alert Equipment and Furnishings - Hydraulic Hoist - Jamming of Cable on Structure7/6/2011
en Alert Equipment and Furnishings- Interference between Pilot's and Copilot's Seat Straps and Bulkhead X171510/19/2009
1 en Alert Equipment and Furnishings - Modification of Hoist Control Power Supply12/14/2020
1 en Alert Equipment and Furnishings - Pilot and Co-Pilot Seats - Inspection of Rear Beam of Seat8/9/2012
en Emergency Alert Equipment and Furnishings - Emergency Floatation Gear - Check of Emergency Floatation Gear Installation9/25/2013
en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under Cabin Seats9/7/2017
en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under 3rd Crew Member Seat9/7/2017
en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under Cockpit Seats9/7/2017
en Alert Equipment and Furnishings - Emergency Flotation Gear - Installation of Flotation Gear Rear Fittings with Spherical Leveling Washers4/4/2018
2 en Alert Equipment and Furnishings - Emergency Flotation Gear - Installation of Flotation Gear Rear Fittings with Spherical Leveling Washers3/21/2019
en Alert Equipment & Furnishings - Emergency Floatation - Check of Front Emergency Floatation Hoses1/7/2020
en Emergency Alert Equipment & Furnishings - Hoist System - Check of Hoist Attachments Fitting1/25/2022
en Alert Equipment and Furnishings - Hoist & Accessories - Addition of a Cable Protection on Hoist Shear Toggle Switch8/3/2023
en Fuel - Replacement of By-Pass Valve on Le Bozec Fuel Filters P/N 4020P25-11, 4020P25-3, 4020P25-3AMT.A, 4020P25-3AMT.B, 4020P25-4 and 4020P25-4AMT.A3/15/2001
en Alert Fuel System - Engine Fuel System - Check Bowls of RH & LH Fuel Filters4/25/2023
1 en Alert Ice and Rain Protection - Check of Main Rotor Blade De-Icing System Distributor Retaining Clamp and Attachment Screw8/21/2008
en Alert Ice and Rain Protection - Electric Multi-Purpose Air Intakes - Relocation of One of Two Power Supply Circuit Breakers of Electric Multi-Purpose Air Intakes onto a Secondary Bar which cannot be Cut-Off7/31/2013
en Alert Landing Gear - Solenoid Valve Power Supply Modification7/12/2010
1 en Alert Navigation - Attitude and Heading Reference System (AHRS) - Change of FLIGHT/GROUND Signal Input3/29/2019
en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/3/2014
1 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door8/29/2017
en Alert Doors - Side Stairway Door - Improvement of Locking System8/29/2017
1 en Alert Doors - Side Stairway Door - Improvement of Locking System10/15/2019
2 en Alert Doors - Side Stairway Door - Improvement of Locking System2/25/2020
en Alert Doors - Lateral Sliding Plug Doors - Check of Jettisoning Mechanism of Lateral Sliding Plug Doors1/30/2017
1 en Alert Doors - Lateral Sliding Plug Doors - Check of Jettisoning Mechanism of Lateral Sliding Plug Doors4/11/2019
3 en Alert Doors - Modification of Release System of Lateral Plug Doors12/17/2019
5 en Alert Fuselage - Intermediate Gear Box (IGB) Fairing3/9/2015
1 en Emergency Alert Fuselage - Check for Presence of Blind Hole in TGB Attachment Fittings1/4/2008
1 en Alert Fuselage - Removal of Drain Plugs (Blanking Caps) in Fuel Tank Compartments5/28/2019
en Fuselage - Replacement of Intermediate Gear Box (IGB) Fairing - Corresponds to MOD 07268193/9/2015
1 en Alert Structure - Jettisoning System - Functional Check of Emergency Jettisoning System of Sliding Plug Doors6/29/2015
en Alert Fuselage - Upper Structure - Procedure for Replacement of RH & LH Splices under Plates & Brackets of Main Gear Box (MGB) Bars2/9/2021
en Alert Fuselage - Primary Structure - Check of Attachment Screws on Rear Attachment Fittings of Main Gear Box (MGB) Suspension Bars11/21/2018
1 en Alert Fuselage - Inspection of Main Gear Box (MGB) Suspension Bars Attachment Fittings and their Attachment Screws3/2/2020
2 en Alert Fuselage - Inspection of Main Gear Box (MGB) Suspension Bars Attachment Fittings and their Attachment Screws8/19/2021
en Alert Fuselage - Inspection of Attachment Fittings and Attachment Screws of Main Gear Box (MGB) Suspension Bars10/21/2019
1 en Alert Fuselage - Inspection of Attachment Fittings and Attachment Screws of Main Gear Box (MGB) Suspension Bars8/19/2021
en Alert Fuselage - Primary Structure - Check of Suspension Bars Attachment Plates3/6/2023
en Mandatory Fuselage - Gutters on Air Intake Stub Frame10/16/1988
en Alert Windows - Jettisonable Windows - Check of Jettisonable Emergency Exit Window Panels8/8/2012
en Alert Windows - Cabin Windows - Check of Press-Studs on Window Jettisoning System7/16/2015
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System2/10/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System9/23/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System9/23/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System9/23/2020
en Alert Windows - Cabin Windows - Improvement to VIP Window Jettisoning2/8/2018
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System4/10/2019
en Mandatory Main Rotor - Changing Vibration Absorber P/N 332A.11.0460.01 to Version P/N 332A.11.0460.02 by Replacing Weight Supports2/13/1997
en Alert Main Rotor - Swashplate Bearing Attachment Screws9/13/2006
en Alert Main Rotor - Main Rotor Hub (MRH) Assembly - Inspection of Lockwasher Position in MRH Assembly5/27/2019
1 en Emergency Alert Main Rotor Drive - Epicyclic Module - Replacement of Epicyclic Module Second Stage Planet Gear Assemblies10/7/2016
2 en Emergency Alert Main Rotor Drive - Epicyclic Module - Replacement of Epicyclic Module Second Stage Planet Gear Assemblies6/23/2017
en Main Rotor Drive - MGB Lubrication System - Addition of a Magnetic Plug between MGB & Oil Cooler7/27/2017
en Main Rotor Drive - MGB Lubrication System - Installation of a Magnetic Plug on Lubrication System2/3/2020
en Alert Tail Rotor - Maintenance Applicable to TRH Pitch Control Rod Bearing in Event of a Hydraulic Fluid Leak3/7/2005
1 en Alert Tail Rotor - Maintenance Applicable to TRH Pitch Control Rod Bearing in Event of a Hydraulic Fluid Leak1/20/2014
en Emergency Alert Tail Rotor - Flapping Hinge - Check of Flapping Hinge11/21/2017
en Alert Tail Rotor - Tail Rotor Assembly - Check of Angular Clearances of Tail Gear Box (TGB)6/30/2021
en Alert Rotor Flight Control - Instructions Related to Pedal Operation Loads. Check of Adjustment Lever P/N 332A27.2344.20 of Pilot's and Copilot's Pedal Unit Assemblies for Cracks and/or Failure7/23/2001
en Alert Rotor Flight Control - Replacement of Pilot's and Copilot's Pedal Unit Adjustment Levers6/8/2001
en Alert Rotor Flight Control - Servocontrol Hydraulic Power System - Crack in Adapter of Hydraulic Reservoir1/8/2003
en Mandatory Alert Rotor Flight Controls - Attaching Main Rotor Servo-Controls to Non-Rotating Swash-Plate10/9/2006
en Mandatory Alert Rotor Flight Controls - Return to Conformity of Main Rotor and Tail Rotor Servocontrols2/19/2007
en Emergency Alert Rotor Flight Controls - Main Rotor Servocontrols - Swaging of Attachment Ball Joints6/15/2010
1 en Emergency Alert Rotor Flight Controls - Servo-Controls - Crimping of End-Fitting Ball Joints12/5/2012
en Rotor Flight Controls - Yaw Controls - Reinforcement of Yaw Damper Support3/2/2020
en Mandatory Power Plant - Engine and Air Intake Subframe Alignment10/16/1985
1 en Mandatory Alert Engine Controls - Fuel Shut-Off Control Lever - Tangential Gearbox Jamming3/22/2007
en Emergency External Load System - Check of Cable Ball End of Breeze Family Hoists12/12/2024
en Emergency Alert Main Rotors - Check of Internal Diameter of Bush Retainings9/29/2023
en Alert Tail Rotor - Rotor Head - Check of Slide of Control Plate12/23/2024
Service Bulletins: AS/SA 341
NameRevisionLangSubjectDate
en Alert Limitations - Tail Rotor Hub - Introduction of a New Part Number & Re-Identification of Equipped Blades of Tail Rotor Hub12/14/2018
3 en Mandatory Time Limits - Inspection of AU4 G1 Inflating Head Installed on Emergency Flotation Gear Nitrogen Cylinder5/4/1998
en Mandatory Limitations - TGB Support Tripod. P/Ns: 341A23-1136-OO/-01/-027/17/1997
en Alert Time Limits - Maintenance Checks - Rotors & Drive Shafts - Check of Flanges of Inclined & Horizontal Drive Shafts on Tail Rotor Transmission5/31/2023
1 en Alert Time Limits - Maintenance Checks - Rotors & Drive Shafts - Check of Flanges of Inclined & Horizontal Drive Shafts on Tail Rotor Transmission7/28/2023
en Mandatory Alert Landing Gear - Skid-Type Landing Gear - Check of Hardness of Rear Cross-Tube3/24/2016
2 en Mandatory Alert Landing Gear - Skid-Type Landing Gear - Check of Hardness of Rear Cross-Tube10/18/2016
en Emergency Alert Rotors & Drive Shafts - Tail Rotor - Check of Blade Root of Tail Rotor Blade (TRB)8/4/2022
2 en Emergency Alert Rotors & Drive Shafts - Tail Rotor - Check of Blade Root of Tail Rotor Blade (TRB)6/19/2023
Service Bulletins: AS/SA 342
NameRevisionLangSubjectDate
en Alert Limitations - Tail Rotor Hub - Introduction of a New Part Number & Re-Identification of Equipped Blades of Tail Rotor Hub12/14/2018
3 en Mandatory Time Limits - Inspection of AU4 G1 Inflating Head Installed on Emergency Flotation Gear Nitrogen Cylinder5/4/1998
en Mandatory Limitations - TGB Support Tripod. P/Ns: 341A23-1136-OO/-01/-027/17/1997
en Alert Time Limits - Maintenance Checks - Rotors & Drive Shafts - Check of Flanges of Inclined & Horizontal Drive Shafts on Tail Rotor Transmission5/31/2023
1 en Alert Time Limits - Maintenance Checks - Rotors & Drive Shafts - Check of Flanges of Inclined & Horizontal Drive Shafts on Tail Rotor Transmission7/28/2023
en Mandatory Alert Landing Gear - Skid-Type Landing Gear - Check of Hardness of Rear Cross-Tube3/24/2016
2 en Mandatory Alert Landing Gear - Skid-Type Landing Gear - Check of Hardness of Rear Cross-Tube10/18/2016
en Emergency Alert Rotors & Drive Shafts - Tail Rotor - Check of Blade Root of Tail Rotor Blade (TRB)8/4/2022
2 en Emergency Alert Rotors & Drive Shafts - Tail Rotor - Check of Blade Root of Tail Rotor Blade (TRB)6/19/2023
Service Bulletins: AS/SA 350
NameRevisionLangSubjectDate
en Mandatory Limitations: S.E.P. Spherical Thrust Bearings P.N. 704A.33.633.27 or .307/4/1979
en Limitations - Conversion of AS 350B into AS 350BA Version3/12/1992
en Mandatory Limitations - Check of Single-Pole Circuit Breakers11/10/1998
1 en Mandatory Alert Limitations - Main Rotor Servo-Controls and Tail Rotor Servo-Controls - Return to Conformity of Bearing of Servo-Control Input Lever4/19/2007
1 en Limitations - Removal of Additional Chin Weights and Addition of a Load Compensator on Yaw Channel on Helicopters which are Post Modification 075601 and Equipped with an Arriel 2D Engine2/15/2013
2 en Alert Limitation - Fuel System and Check - FADEC - Flight Manual Procedure2/17/2014
en Emergency Alert Limitations - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control10/1/2020
1 en Emergency Alert Limitations - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control1/6/2021
2 en Mandatory Limitations - Pitch Change Fittings Reference 350A.12.1368.01 and .02 on Tail Rotor Blade Assemblies10/19/1981
en Behavior on Ground with Rotor Turning
en Mandatory Limitations of Thrust Bearing Bolts P/N: 350A31-2051-20 and 350A31-2067-20 Service Life Reduction11/5/1987
1 en Battery Temperature Probe5/13/1991
en Mandatory Main Rotor Mast Equipped with a 4-Contact Point Bearing5/27/1993
en Mandatory Cyclic Pitch Change Control Rod6/26/1994
1 en Possible Malfunction of MGB Oil Pressure Switch4/21/1994
en Mandatory Time Limits - Checking Main Gear Box Suspension Bi-Directional Cross Beam, P/N: 350A38-1018-AII Dash Numbers, Installed on Complete Cross Beam Assemblies, P/N: 350A38-0210-AII Dash Numbers5/26/1997
2 en Mandatory Time Limits - Tail Rotor Hub Pitch Change Spider Bearing Check9/29/1999
en Mandatory Time Limits - Check for Absence of Rotation of Bearing Spacer of Tail Rotor Pitch Change Rotating Plate5/15/2000
en Alert Time Limits - Maintenance Checks - Replacement of Hydraulic Fluid in Cold Weather4/8/2004
en Alert Time Limits - Maintenance Checks - Check of Sliding Door Rear Roller Support Shaft and Rear Fitting7/19/2006
en Alert Time Limits - Maintenance Checks - Cracked Main Servo-Control Tapered Housing2/28/2006
en Mandatory Alert Time Limits - Maintenance Checks - Oxygen Cylinders8/16/2006
en Emergency Alert Time Limits - Maintenance Checks - Collective Pitch Lever Locking Stud1/12/2008
en Alert Time Limits - Maintenance Checks - Check for No Play in Tail Rotor Pitch-Change Links12/9/2009
2 en Emergency Alert Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)8/13/2013
3 en Emergency Alert Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)6/15/2015
1 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever4/23/2010
2 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever3/1/2011
1 en Alert Equipment and Furnishings - Emergency Floatation Gear - Check of Front and Rear Attachment Brackets4/18/2011
en Alert Time Limits - Maintenance Checks - Tail Rotor Control - Checking Locking of Stop Screws of Yaw Flight Controls8/30/2011
en Emergency Alert Time Limits - Maintenance Checks - Rear Structure - Check of Rear Frame Reinforcement Angles3/24/2014
2 en Emergency Alert Time Limits - Maintenance Checks - Check of Tail Rotor Laminated Half Bearings12/19/2012
1 en Emergency Alert Time Limits/Maintenance Checks - Tail Rotor - Tail Rotor Hub (TRH) Pitch Horn - Check of TRH Pitch Horn Condition6/25/2013
1 en Emergency Alert Time Limits - Maintenance Checks - Twist Grip - Checking and Ensuring Water-Tightness of Connectors on Microswitches 53Ka, 53Kb and 65K (IDLE / FLIGHT Modes)6/15/2015
3 en Emergency Alert Time Limits - Maintenance Checks - Pitch Change Rod - Periodic Check of Tail Rotor Hub (TRH) Pitch Change Rod5/8/2019
1 en Emergency Alert Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin7/22/2020
2 en Emergency Alert Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin3/4/2021
en Alert Time Limits - Maintenance Checks - Fuselage - Check for Presence of Main Gear Box (MGB) Suspension Bar Attachment Bracket Screw Head7/16/2018
1 en Emergency Alert Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Blades11/5/2020
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links2/9/2021
en Alert Time Limits - Maintenance Checks - Check for Absence of Rotation of Bearing Spacer of Tail-Rotor-Head (TRH) Pitch-Change-Unit12/16/2021
en Alert Time Limits - Maintenance Checks - Main Rotor Drive - Check of Main Gear Box (MGB) Bevel Wheel1/25/2023
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection by Tapping of Stainless Steel Leading Edge Protection of Main Rotor Blades12/6/2022
3 en Mandatory Time Limits - Checking Ball Bearings in Tail Rotor Drive Shaft Rear Section Bearing Mountings2/20/1992
3 en Time Limits - Main Rotor Mast Shaft Monitoring11/10/1987
en Mandatory Monitoring Fuselage to Tail Boom Junction
en Alert Equipment and Furnishings - Breeze 300 LB (136 kg) Electrical Hoist Installation - Failure of Pyrotechnic Squib Control to Operate11/12/2002
3 en Alert Equipment and Furnishings - Breeze 300 LB (136 kg) Electrical Hoist Installation - Failure of Pyrotechnic Squib Control to Operate9/24/2019
en Alert Equipment and Furnishings - Elimination of a Ground Connection on Hoist Squib Wiring11/16/2005
en Alert Equipment and Furnishings - 1900 kg and 1950 kg Emergency Flotation Gear9/24/2008
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses2/12/2020
en Alert Equipment & Furnishings - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control1/6/2021
1 en Emergency Alert Equipment & Furnishings - Cargo Swing - Inspection of Cargo Swing Frame5/15/2023
en Fuel System Low-Pressure Pump Failure Warning3/7/1990
en Alert Fuel - In-Flight Loss of Fuel Bleed Lever3/4/2004
en Alert Hydraulic Power - Improvement of "Hydraulic Cut Off" Function4/8/2004
en Alert Hydraulic Power - Protection of Forward Servo-Control Hoses7/26/2010
en Emergency Alert Hydraulic Power - Main Hydraulic Generation - Check of "Hydraulic Cut-Off" Function ("HYD" Switch on Collective Stick)5/4/2021
1 en Alert Doors - Sliding Doors - Inspection of Upper Rail and Roller of LH and/or RH Sliding Doors7/30/2020
en Alert Doors - Sliding Doors - Double Locking of Upper Rail Roller of LH and/or RH Sliding Door & Locking Markings5/23/2023
4 en Fuselage - Locking MGB and Engine Cowling3/30/1992
en Fuselage Removing Side Console from Instrument Panel, LH Side9/24/1991
en Alert Fuselage - Replacement of MGB Opening Cowling Seals7/11/2002
en Emergency Alert Fuselage - Check of Conformity of Center Cross Member at X 2325 Under Cabin Floor4/11/2007
en Fuselage - MGB Side Cowlings9/23/1981
2 en Alert Stabilizers - Improvement and/or Monitoring of Upper and Lower Fin Attachments2/28/2008
1 en Alert Stabilizers - Improvement of Attachment Strength for Upper and Lower Fin Skids1/5/2009
en Alert Main Rotor - Swashplates - Check of Rotating Star4/28/2014
en Alert Main Rotor - Main Rotor Hub - Check of Main Rotor Hub / Mast Attachment Screws2/15/2017
en Alert Main Rotor - Main Rotor Mast - Check of Bearing Retaining Rings of Main Rotor Mast9/17/2018
en Alert Main Rotor Drive - Engine-to-MGB Coupling - New Hydraulic Pump Drive Bearing10/21/2014
en Alert Main Rotor Drive - NR Indicator - Addition of a Second Power Supply on NR Indicator5/17/2016
2 en Alert Tail Rotor - Improving Tail Rotor Blade Trailing Edge Tab Security2/15/2007
en Tail Rotor - Tail Rotor Blades - Modification of Chin Weight Support to Avoid Any Interference with Laminated Halfbearings12/19/2012
en Alert Rotor Flight Controls - Tail Gearbox - Check of Tail Gearbox (TGB) Casing Assembly5/18/2011
en Mandatory Rotors - Checking Rotating Star Drive Adapter in Main Rotor Shaft Assembly10/20/1978
2 en Mandatory Rotors - Increase of Pre-Stress on Tail Shaft "TIMKEN" Bearings in Tail Gearbox8/13/1979
en Mandatory Rotors - Wear Telltale Washers for Laminated Bearing on Tail Rotor Hub11/6/1979
en Mandatory Flying Controls - Servo - Controls10/9/1989
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls2/19/2007
3 en Alert Rotor Flight Controls - Modification to Electrical Operation of Twist Grip for Arriel 2B Engines6/16/2016
en Emergency Alert Rotor Flight Controls - Single Hydraulic Main and Tail Servo-Controls4/15/2013
en Rotor Flight Controls - Double Hydraulic Servocontrols - "HYDR" Test Indication for Double Hydraulic Servocontrols2/25/2015
en Rotor Flight Controls - Dual Hydraulic System - Replacement of "ACCU TST" Button8/25/2016
1 en Rotor Flight Controls - Functional Check Procedure for Tail Rotor Load Compensator10/22/2015
1 en Alert Rotor Flight Controls - Tail Rotor Flight Controls - Check of TGB Actuating Rod3/11/2019
en Emergency Alert Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod7/25/2019
en Emergency Alert Rotor Flight Control - General - Inspection for Conformity of Flexballs4/29/2022
en Alert Power Plant - Interference between Bleed Valve Air Exhaust Duct and Engine Fuel Line5/12/2003
2 en Power Plant - Ariel Engine Flushing Installation10/2/1990
en Engine Indicating (ASU No 2) PCB SE 03022 - Resistor R8 Not Installed3/27/2000
1 en Mandatory Oil - Engine Lubricating System - Protection of Pipe Between Engine and MGB Compartments5/5/2000
en Mandatory Inspection of Air Cruisers Emergency Floatation System5/22/1981
en Mandatory Inspection of Air Cruisers Emergency Flotation Electrical Harness and Modification to Harness4/4/1983
en Equipment & Furnishings - Litter Kit - Modification of Bead Chain Tether Attachment Location3/24/2017
Service Bulletins: AS/SA 355
NameRevisionLangSubjectDate
en Mandatory Limitations - Check of Single-Pole Circuit Breakers11/10/1998
1 en Alert Limitations - Tail Rotor Drive Shaft Forward Shaft Section2/9/2006
1 en Alert Limitations - Starter Generator Limitations9/14/2006
1 en Mandatory Alert Limitations - Main Rotor Servo-Controls and Tail Rotor Servo-Controls - Return to Conformity of Bearing of Servo-Control Input Lever4/19/2007
en Emergency Alert Limitations - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control10/1/2020
1 en Emergency Alert Limitations - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control1/6/2021
en Behavior on Ground with Rotor Turning8/21/1986
en Mandatory Limitations - Cyclic Pitch Change Control Rod6/26/1994
1 en Mandatory Possible Malfunction of MGB Oil Pressure Switch4/21/1994
en Mandatory Time Limits - Checking Main Gear Box Suspension Bi-Directional Cross Beam, P/N: 35OA38-1018-All Dash Numbers, Installed on Complete Cross Beam Assemblies, P/N: 350A38-0210-All Dash Numbers5/26/1997
en Mandatory Time Limits - Tail Rotor Hub Pitch Change Spider Bearing Check2/8/1999
2 en Mandatory Time Limits - Tail Rotor Hub Pitch Change Spider Bearing Check9/29/1999
en Mandatory Time Limits - Check for Absence of Rotation of Bearing Spacer of Tail Rotor Pitch Change Rotating Plate5/15/2000
en Mandatory Alert Time Limits/Maintenance Checks - MGB - Lubrication Pumps11/16/2004
1 en Mandatory Alert Time Limits/Maintenance Checks - MGB - Lubrication Pumps1/5/2006
2 en Mandatory Alert Time Limits/Maintenance Checks - MGB - Lubrication Pumps12/20/2006
en Alert Time Limits - Maintenance Checks - Replacement of Hydraulic Fluid in Cold Weather4/8/2004
en Alert Time Limits - Maintenance Checks - Check of Sliding Door Rear Roller Support Shaft and Rear Fitting7/19/2006
en Alert Time Limits - Maintenance Checks - Cracked Main Servo-Control Tapered Housing2/28/2006
en Alert Time Limits - Maintenance Checks - Monitoring of MGB Oil Pump7/9/2007
1 en Alert Time Limits - Maintenance Checks - Monitoring of MGB Oil Pump7/29/2015
en Alert Time Limits - Maintenance Checks - Check for No Play in Tail Rotor Pitch-Change Links12/9/2009
1 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever4/23/2010
2 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever3/1/2011
1 en Alert Equipment and Furnishings - Emergency Floatation Gear - Check of Front and Rear Attachment Brackets4/18/2011
en Alert Time Limits - Maintenance Checks - Tail Rotor Control - Checking Locking of Stop Screws of Yaw Flight Controls8/30/2011
en Emergency Alert Time Limits - Maintenance Checks - Rear Structure - Check of Rear Frame Reinforcement Angles3/24/2014
2 en Emergency Alert Time Limits - Maintenance Checks - Check of Tail Rotor Laminated Half Bearings12/19/2012
1 en Emergency Alert Time Limits/Maintenance Checks - Tail Rotor - Tail Rotor Hub (TRH) Pitch Horn - Check of TRH Pitch Horn Condition6/25/2013
3 en Emergency Alert Time Limits - Maintenance Checks - Pitch Change Rod - Periodic Check of Tail Rotor Hub (TRH) Pitch Change Rod5/8/2019
1 en Emergency Alert Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin7/22/2020
2 en Emergency Alert Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin3/4/2021
en Alert Time Limits - Maintenance Checks - Fuselage - Check for Presence of Main Gear Box (MGB) Suspension Bar Attachment Bracket Screw Head7/16/2018
1 en Emergency Alert Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Blades11/5/2020
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links2/9/2021
en Alert Time Limits - Maintenance Checks - Check for Absence of Rotation of Bearing Spacer of Tail-Rotor-Head (TRH) Pitch-Change-Unit12/16/2021
en Alert Time Limits - Maintenance Checks - Main Rotor Drive - Check of Main Gear Box (MGB) Bevel Wheel1/25/2023
en Alert Inspection Schedules - Tail Rotor Drive - Periodic Check & Modification of Fan Supports4/3/2022
1 en Alert Inspection Schedules - Tail Rotor Drive - Periodic Check & Modification of Fan Supports7/20/2022
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection by Tapping of Stainless Steel Leading Edge Protection of Main Rotor Blades12/6/2022
en Mandatory Monitoring Fuselage to Tail Boom Junction
en Mandatory Time Units - MGB Oil Cooler Fan Vibration Level Check2/1/1989
en Alert Electrical Power - Upgrade of Electrical Master Boxes11/28/2002
en Alert Equipment and Furnishings - Breeze 300 LB (136 kg) Electrical Hoist Installation - Failure of Pyrotechnic Squib Control to Operate11/12/2002
2 en Alert Equipment and Furnishings - Breeze 300 LB (136 kg) Electrical Hoist Installation - Failure of Pyrotechnic Squib Control to Operate5/14/2019
en Alert Equipment and Furnishings - Elimination of a Ground Connection on Hoist Squib Wiring11/16/2005
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses2/12/2020
en Alert Equipment & Furnishings - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control1/6/2021
en Alert Fire Protection - Engine Fire Extinguishing System - Crossed Connection in Distribution System of Engine Fire Extinguishers7/2/2015
en Alert Fuel - Removal of FUELTRON Flowmeter6/6/2013
1 en Alert Doors - Sliding Doors - Inspection of Upper Rail and Roller of LH and/or RH Sliding Doors7/30/2020
en Alert Doors - Sliding Doors - Double Locking of Upper Rail Roller of LH and/or RH Sliding Door & Locking Markings5/23/2023
en Emergency Alert Fuselage - Check of Conformity of Center Cross Member at X 2325 Under Cabin Floor4/11/2007
en Fuselage - Improvement to Engine and MGB Cowling Locking10/9/2008
en Alert Fuselage - Engine Cowlings - Inspection of Engine Fixed Cowling10/27/2021
2 en Alert Stabilizers - Improvement and/or Monitoring of Upper and Lower Fin Attachments2/28/2008
1 en Alert Stabilizers - Improvement of Attachment Strength for Upper and Lower Fin Skids1/5/2009
en Alert Main Rotor - Swashplates - Check of Rotating Star4/28/2014
en Alert Main Rotor - Main Rotor Hub - Check of Main Rotor Hub / Mast Attachment Screws2/15/2017
en Alert Main Rotor - Main Rotor Mast - Check of Bearing Retaining Rings of Main Rotor Mast9/17/2018
en Main Rotor Drive - New MGB Base Bidirectional Crossbeam4/7/1997
1 en Main Rotor Drive - New Distribution of Oil Flow between Combiner Gearbox and MGB7/29/2015
2 en Main Rotor Drive - New Distribution of Oil Flow between Combiner Gearbox and MGB6/22/2017
2 en Alert Tail Rotor - Improving Tail Rotor Blade Trailing Edge Tab Security2/15/2007
en Alert Rotor Flight Controls - Tail Gearbox - Check of Tail Gearbox (TGB) Casing Assembly5/18/2011
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls2/19/2007
1 en Alert Rotor Flight Controls - Load Compensator Lever4/27/2007
en Emergency Alert Rotor Flight Controls - Single Hydraulic Main and Tail Servo-Controls4/15/2013
1 en Alert Rotor Flight Controls - Tail Rotor Flight Controls - Check of TGB Actuating Rod3/11/2019
en Alert Rotor Flight Controls - Collective Controls - Replacement of Release Control Protective Cover on Pilot Collective Stick1/12/2021
en Emergency Alert Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod7/25/2019
en Emergency Alert Rotor Flight Control - General - Inspection for Conformity of Flexballs4/29/2022
en Mandatory Flying Controls - Servo-Controls4/18/1990
1 en Alert Power Plant - Addition of a Label on Instrument Panel11/10/2020
2 en Starting - Automatic Relighting of Allison 250C 20F Engines7/8/1987
en Equipment & Furnishings - Litter Kit - Modification of Bead Chain Tether Attachment Location3/24/2017
Service Bulletins: AS/SA 360
NameRevisionLangSubjectDate
en Mandatory Limitations - Single-Pole Circuit Breakers Check12/11/1997
en Alert Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Bottom Plate2/17/2005
en Emergency Alert Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)5/7/2008
Service Bulletins: AS/SA 365
NameRevisionLangSubjectDate
1 en Mandatory Limitations - Checking Tightening Torque Valve on Outboard Fin Attachment Studs P/N 365A13-301724, on which MOD 0755808 has Not Been Incorporated10/24/1996
en Mandatory Limitation - Single-Pole Circuit Breakers Check12/11/1997
en Alert Limitations - Tail Rotor Pitch Change Control Rod7/4/2002
en Alert Limitations - Tail Rotor Blade Pitch-Control Shafts P/N 365A33.6161.20 or 21 (Pre-MOD 0765B41 Aluminum Control Shafts)6/21/2007
1 en Emergency Alert Limitations - Limited Fuel Transfer between Fuel Tank Groups5/13/2009
en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"8/26/2014
1 en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"2/12/2019
5 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)3/25/2020
6 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)6/14/2021
3 en Emergency Alert Limitations - Tail Gear Box (TGB) P/Ns 365A33-6005-09 and 365A33-6005-106/14/2021
en Mandatory Limitations - Single-Pole Circuit Breakers Check12/11/1997
en Mandatory Doors - Forward Passenger Door Jettision System1/31/1994
en Alert Time Limits - Tail Rotor Blade Monitoring and Limitations4/16/2003
3 en Mandatory Time Limits - Blades - Checking Kevlar Tie-Bar11/14/1996
1 en Time Limits - Checking for Cracks on Beams X 3826.7 and X 4338.7, Under Transmission Deck - Checking for Cracks on Transmission Deck12/16/1996
en Alert Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Base Plate11/10/2004
3 en Emergency Alert Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends8/18/2008
4 en Emergency Alert Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends11/20/2014
en Alert Tail Rotor - Tail Rotor Pitch Control Rod Double Bearing2/15/2006
en Alert Time Limits - Maintenance Checks - Maintaining Oil Level in Tail Gearbox (TGB) at its Maximum Level. Checking Tail Rotor Hub (TRH) Pitch Change Control Rod Bearing for Absence of Play if Metal Chips are Detected at Magnetic Plug8/25/2006
1 en Emergency Alert Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame3/31/2010
2 en Emergency Alert Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame4/7/2014
2 en Mandatory Alert Time Limits - Maintenance Checks - Tail Rotor Hub (TRH) - Visual Check of 10-Blade and 11-Blade TRH Hubs10/9/2012
1 en Emergency Alert Time Limits - Maintenance Checks - Inspection of 9° Frame in Area of Latch Support and Stretcher Support6/18/2012
2 en Emergency Alert Time Limits - Maintenance Checks - Inspection of 9° Frame in Area of Latch Support and Stretcher Support12/20/2018
1 en Mandatory Alert Time Limits - Maintenance Checks - External Life Rafts Installed in Footsteps9/1/2014
1 en Mandatory Alert Time Limits - Maintenance Checks - Strobe Light - Interference between Lower Strobe Light Harnesses and Fuel Tank Support12/12/2016
en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin7/21/2017
1 en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin3/27/2019
3 en Alert Main Rotor Drive - Main Gear Box (MGB) - Periodic Check of MGB Magnetic Plugs & Replacement of MGB Planet Gears3/2/2018
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links2/9/2021
en Alert Time Limits - Maintenance Checks - Tail Rotor Drive - Tail Gear Box (TGB) MP/N 365A33-5000-002/7/2022
en Alert Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Bottom Plate2/17/2005
3 en Emergency Alert Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends8/18/2008
4 en Emergency Alert Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends11/20/2014
1 en Alert Time Limits - Maintenance Checks - Main Gear Box (MGB) - Periodic Check of MGB Magnetic Plugs & Filtering Cartridge & Replacement of MGB Planet Gears12/15/2020
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links2/9/2021
en Alert Time Limits - Maintenance Checks - Tail Rotor Drive - Tail Gear Box (TGB) MP/N 365A33-4000-00/01/02 and 365A33-5000-002/7/2022
2 en Mandatory Alert Placards and Markings - Basic and Optional Marking Change - Corresponds to MODs 0711B67 and 0711B684/23/2015
1 en Alert Auto Flight - Tail Rotor Flight Controls - Check of Position of Yaw Harness Compared to Tail Gear Box (TGB) Fairing6/27/2023
1 en Alert Equipment and Furnishings - Pilot and Co-Pilot Seats - Inspection of Rear Beam of Seat8/9/2012
1 en Mandatory Alert Equipment and Furnishings - Life Raft Installation - Improved External Life Raft Deployment Controls - Corresponds to Modification 365A084711.002/2/2015
en Alert Equipment & Furnishings - Internal Life Raft Installation - Check of Condition of Life Raft & its Flash Light Battery12/15/2015
1 en Alert Equipment & Furnishings - Internal Life Raft Installation - Check of Condition of Life Raft & its Flash Light Battery2/5/2016
en Alert Equipment and Furnishings - Label "Do Not Stow Anything under Any Seat"2/12/2019
en Alert Equipment & Furnishings - Emergency Floatation - Check of Front Emergency Floatation Hoses1/7/2020
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses2/12/2020
en Mandatory Indicating and Recording Systems - MGB Planet Gear Shaft Vibration Level Monitoring Unit6/23/1998
en Alert Landing Gear - Wheel Brake Hydraulic Hose Bursting10/27/2003
1 en Alert Navigation - Reinforced Shelf for GV76-1 Vertical Gyro Units in Cargo7/28/2010
1 en Alert Doors - External Jettisoning of Pilot & Co-Pilot Doors6/4/2021
en Alert Doors - Emergency Exit - Emergency Evacuation Labels for Helicopters Installed with Fixed Parts of FLIR System2/10/2021
1 en Alert Doors - Emergency Exit - Emergency Evacuation Labels for Helicopters Installed with Fixed Parts of FLIR System2/9/2022
1 en Alert Fuselage - Draining Tank Box Area9/21/2011
1 en Alert Fuselage - Cowlings & Fairings - Inspection of Main Gearbox (MGB) Fixed Cowling Front Fitting12/20/2018
en Alert Fuselage - Cowling & Fairings - Modification of MGB Fixed Cowling Attachment12/20/2018
en Alert Fuselage - Engine Cowlings - Inspection of Engine Upper Fixed Cowling10/27/2021
en Mandatory Alert Main Rotor - Check of Main Rotor Hub-to-Mast Bolted Attachment4/10/2006
en Emergency Alert Main Rotor - Frequency Adapter with Ventilation Holes11/23/2006
en Emergency Alert Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)5/7/2008
1 en Alert Main Rotor Drive - Tail Rotor Drive Flange - Installation of Aft Output Stop1/31/2019
3 en Main Rotor Drive - Replacement of Epicyclic Reduction Gear on MGB7/26/2018
en Alert Main Rotor Drive - Indicating - Replacement of Electrical Magnetic Plug of Main Gearbox (MGB) Pump Intake with Non-Electrical Magnetic Plug7/11/2018
en Alert Main Rotor Drive - Indicating - Upgrade of Non-Electrical Magnetic Plug at Pump Intake of Main Gearbox (MGB)7/11/2018
en Alert Main Rotor Drive - Tail Rotor Drive Flange - Installation of Rear Output Stop7/22/2020
en Emergency Alert Main Rotor Drive - Main Gear Box (MGB) - Removal of MGB to Replace MGB Housing2/19/2020
en Alert Tail Rotor - Installation of a Tuning Weight on Each Blade of Quiet Fenestron Tail Rotor10/30/2002
1 en Rotors - TGB Control Shaft Guide Bush Replacement3/21/2011
en Emergency Alert Tail Rotor Drive - Tail Gear Box (TGB) - Checking there is No Oil Retention in Recess of TGB Housing7/10/2019
en Alert Tail Rotor Drive - Tail Gear Box (TGB) - Check of Control Rod Dual Bearing of TGB MP/N 365A33-5000-0011/23/2022
en Mandatory Alert Main Rotor - Check of Main Rotor Hub-to-Mast Bolted Attachment4/10/2006
en Emergency Alert Main Rotor - Frequency Adapter with Ventilation Holes11/23/2006
en Emergency Alert Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)5/7/2008
1 en Alert Rotors - Tail Rotor Drive Flange - Installation of Rear Output Stop7/22/2020
en Alert Tail Rotor Drive - Main Gear Box - Upgrade of Non-Electrical Magnetic Plug at Pump Intake of MGB5/28/2020
1 en Alert Rotor Flight Controls - Check of Collective Pitch Lever Restraining Tab2/25/2009
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls2/19/2007
en Emergency Alert Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod7/25/2019
en Power Plant FADEC - Software Modification10/17/2000
en Mandatory Power Plant - Checking RH and LH Sand Filter Ejection Nozzles for Cracks2/21/2000
en Alert Power Plant - Firewall - Modification of Material of Firewall Edging10/25/2022
en Emergency External Load System - Check of Cable Ball End of Breeze Family Hoists12/12/2024
Service Bulletins: AS/SA 366
NameRevisionLangSubjectDate
1 en Mandatory Limitations - Checking Tightening Torque Value on Outboard Fin Attachment Studs P/N 365A13-3017-24, on which MOD 0755B08 has Not Been Incorporated10/24/1996
5 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)3/25/2020
3 en Emergency Alert Limitations - Tail Gear Box (TGB) P/Ns 365A33-6005-09 and 365A33-6005-106/14/2021
3 en Mandatory Time Limits - Blades - Checking Kevlar Tie-Bar11/14/1996
4 en Emergency Alert Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends11/20/2014
3 en Emergency Alert Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends8/18/2008
en Alert Tail Rotor - Tail Rotor Pitch Control Rod Double Bearing2/15/2006
1 en Emergency Alert Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame3/31/2010
2 en Emergency Alert Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame4/7/2014
en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin7/21/2017
1 en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin3/27/2019
en Mandatory Indicating and Recording Systems - MGB Planet Gear Shaft Vibration Level Monitoring Unit6/23/1998
1 en Alert Fuselage - Draining Tank Box Area9/21/2011
en Emergency Alert Main Rotor - Frequency Adapter with Ventilation Holes11/23/2006
en Emergency Alert Main Rotor Drive - Main Gear Box (MGB) - Removal of MGB to Replace MGB Housing2/19/2020
en Emergency Alert Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)5/7/2008
1 en Rotors - TGB Control Shaft Guide Bush Replacement3/21/2011
en Emergency Alert Tail Rotor Drive - Tail Gear Box (TGB) - Checking there is No Oil Retention in Recess of TGB Housing7/10/2019
1 en Alert Rotor Flight Controls - Check of Collective Pitch Lever Restraining Tab2/25/2009
en Emergency Alert Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod7/25/2019
Service Bulletins: AS/SA 532
NameRevisionLangSubjectDate
en Mandatory Alert Limitations - Hydraulic Pump8/23/2007
1 en Emergency Alert Limitations - Lateral Sliding Plug Doors - Prohibition Against Jettisoning of RH Lateral Sliding Plug Door for Helicopters Equipped with Hoist Arm6/28/2018
en Emergency Alert Limitations - Sling - Longitudinal Beams Y3503/19/2012
en Mandatory Alert Time Limits - Maintenance Checks - Oxygen Cylinders8/16/2006
2 en Emergency Alert Time Limits - Maintenance Checks - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification4/23/2009
3 en Emergency Alert Time Limits - Maintenance Checks - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification7/13/2012
3 en Emergency Alert Equipment and Furnishings - Hydraulic Hoist - Jamming of Cable on Structure7/6/2011
en Alert Equipment and Furnishings - Interference between Pilot's and Copilot's Seat Straps and Bulkhead X171510/19/2009
en Emergency Alert Equipment and Furnishings - Emergency Floatation Gear - Check of Emergency Floatation Gear Installation9/25/2013
en Emergency Alert Equipment & Furnishings - Hoist System - Check of Hoist Attachments Fitting1/25/2022
1 en Alert Ice and Rain Protection - Check of Main Rotor Blade De-Icing System Distributor Retaining Clamp and Attachment Screw8/21/2008
en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/3/2014
1 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door8/29/2017
5 en Alert Fuselage - Intermediate Gear Box (IGB) Fairing3/9/2015
1 en Emergency Alert Fuselage - Check for Presence of Blind Hole in TGB Attachment Fittings1/4/2008
en Emergency Alert Tail Rotor - Flapping Hinge - Check of Flapping Hinge11/21/2017
en Mandatory Alert Rotor Flight Controls - Attaching Main Rotor Servo-Controls to Non-Rotating Swash-Plate10/9/2006
en Emergency Alert Rotor Flight Controls - Main Rotor Servocontrols - Swaging of Attachment Ball Joints6/15/2010
1 en Emergency Alert Rotor Flight Controls - Servo-Controls - Crimping of End-Fitting Ball Joints12/5/2012
1 en Mandatory Alert Engine Controls - Fuel Shut-Off Control Lever - Tangential Gearbox Jamming3/22/2007
Service Bulletins: AS/SA 550
NameRevisionLangSubjectDate
1 en Mandatory Alert Limitations - Main Rotor Servo-Controls and Tail Rotor Servo-Controls - Return to Conformity of Bearing of Servo-Control Input Lever4/19/2007
en Alert Time Limits - Maintenance Checks - Cracked Main Servo-Control Tapered Housing2/28/2006
en Emergency Alert Time Limits - Maintenance Checks - Collective Pitch Lever Locking Stud1/12/2008
1 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever4/23/2010
2 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever2/28/2011
1 en Emergency Alert Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)8/13/2013
2 en Emergency Alert Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)6/15/2015
en Emergency Alert Time Limits - Maintenance Checks - Rear Structure - Check of Rear Frame Reinforcement Angles3/24/2014
2 en Emergency Alert Time Limits - Maintenance Checks - Check of Tail Rotor Laminated Half Bearings12/19/2012
1 en Emergency Alert Time Limits/Maintenance Checks - Tail Rotor - Tail Rotor Hub (TRH) Pitch Horn - Check of TRH Pitch Horn Condition6/25/2013
1 en Emergency Alert Time Limits - Maintenance Checks - Twist Grip - Checking and Ensuring Water-Tightness of Connectors on Microswitches 53Ka, 53Kb and 65K (IDLE / FLIGHT Modes)6/15/2015
3 en Emergency Alert Time Limits - Maintenance Checks - Pitch Change Rod - Periodic Check of Tail Rotor Hub (TRH) Pitch Change Rod5/8/2019
1 en Emergency Alert Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin7/22/2020
2 en Emergency Alert Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin3/4/2021
1 en Emergency Alert Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Blades11/5/2020
1 en Emergency Alert Equipment & Furnishings - Cargo Swing - Inspection of Cargo Swing Frame5/15/2023
en Emergency Alert Fuselage - Check of Conformity of Center Cross Member at X 2325 Under Cabin Floor4/11/2007
en Emergency Alert Rotor Flight Controls - Single Hydraulic Main and Tail Servo-Controls4/15/2013
en Emergency Alert Rotor Flight Control - General - Inspection for Conformity of Flexballs4/29/2022
Service Bulletins: AS/SA 555
NameRevisionLangSubjectDate
1 en Mandatory Alert Limitations - Main Rotor Servo-Controls and Tail Rotor Servo-Controls - Return to Conformity of Bearing of Servo-Control Input Lever4/19/2007
2 en Mandatory Alert Time Limits/Maintenance Checks - MGB - Lubrication Pumps12/20/2006
1 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever4/23/2010
2 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever2/28/2011
en Emergency Alert Time Limits - Maintenance Checks - Rear Structure - Check of Rear Frame Reinforcement Angles3/24/2014
2 en Emergency Alert Time Limits - Maintenance Checks - Check of Tail Rotor Laminated Half Bearings12/19/2012
1 en Emergency Alert Time Limits/Maintenance Checks - Tail Rotor - Tail Rotor Hub (TRH) Pitch Horn - Check of TRH Pitch Horn Condition6/25/2013
3 en Emergency Alert Time Limits - Maintenance Checks - Pitch Change Rod - Periodic Check of Tail Rotor Hub (TRH) Pitch Change Rod5/8/2019
1 en Emergency Alert Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin7/22/2020
2 en Emergency Alert Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin3/4/2021
1 en Emergency Alert Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Blades11/5/2020
en Emergency Alert Fuselage - Check of the Conformity of Center Cross Member at X 2325 Under Cabin Floor4/11/2007
en Emergency Alert Rotor Flight Controls - Single Hydraulic Main and Tail Servo-Controls4/15/2013
en Emergency Alert Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod7/25/2019
en Emergency Alert Rotor Flight Control - General - Inspection for Conformity of Flexballs4/29/2022
Service Bulletins: AS/SA 565
NameRevisionLangSubjectDate
3 en Emergency Alert Limitations - Tail Gear Box (TGB) P/Ns. 365A33-6005-09 and 365A33-6005-106/14/2021
3 en Emergency Alert Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends8/18/2008
4 en Emergency Alert Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends11/20/2014
en Alert Tail Rotor - Tail Rotor Pitch Control Rod Double Bearing2/15/2006
1 en Emergency Alert Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame3/31/2010
2 en Emergency Alert Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame4/7/2014
1 en Emergency Alert Time Limits - Maintenance Checks - Inspection of 9° Frame in Area of Latch Support and Stretcher Support6/18/2012
2 en Emergency Alert Time Limits - Maintenance Checks - Inspection of 9° Frame in Area of Latch Support and Stretcher Support12/20/2018
en Mandatory Alert Main Rotor - Check of Main Rotor Hub-to-Mast Bolted Attachment4/10/2006
en Emergency Alert Main Rotor - Frequency Adapter with Ventilation Holes11/23/2006
en Emergency Alert Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)5/7/2008
en Emergency Alert Tail Rotor Drive - Tail Gear Box (TGB) - Checking there is No Oil Retention in Recess of TGB Housing7/10/2019
en Emergency Alert Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod7/25/2019
en Emergency External Load System - Check of Cable Ball End of Breeze Family Hoists12/12/2024
Service Bulletins: BO105
NameRevisionLangSubjectDate
1 en Main Rotor Head - Modification of P/N 10514101 Configuration to P/N 105141081 Configuration (New Product-Improved and Strengthened Dynamic Component Parts Released for Service Use)7/16/2001
en Alert Main Transmission - Visual Inspection of Rotor Mast Flange for Cracks8/27/1997
en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap8/11/1999
1 en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap8/31/1999
2 en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap11/16/1999
3 en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap11/10/2000
en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion Strap8/23/1999
2 en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion Strap8/31/1999
en Alert Main Rotor System - Implementation of a Calendar Life Limit for Torsion-Tension-Straps 2602559 and 26065766/25/2001
en Alert Lifting System - Main Rotor System - Introduction of a Storage Time for Tension Torsion-Straps12/3/2018
en Alert Tail Rotor - Check of Balance Weights and Control Lever9/23/2008
en Alert Main Rotor Controls - Modification of Cyclic Stick Lock/Centering12/19/2008
4 en Alert Flight Control System - Main Rotor Controls - Removal of Swashplate Bellows5/23/2016
5 en Alert Flight Control System - Main Rotor Controls - Removal of Swashplate Bellows7/25/2017
en Emergency Alert Main Rotor System - Swashplate - Check of Swashplate1/11/2023
1 en Alert Power Plant - Avoidance of a Determined N2 Speed Range3/3/2010
2 en Alert Optional Equipment - Retrofit of Continuous Ignition System9/13/1993
1 en Alert Optional Equipment - Rescue Hoist - Deactivation of Cable Cutter Function on Control Grip2/2/2015
4 en Alert Starter - Generators - Inspection / Retrofit of a Ground Reference Connection6/21/2010
en Emergency Alert Main Rotor System - Swashplate - Check of Swashplate1/11/2023
en Alert Main Transmission - Visual Inspection of Rotor Mast Flange for Cracks9/11/1997
en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion Strap9/1/1999
en Alert Lifting System - Life Limited Parts - Change and Introduction of Life Limits and Reidentification of Life Limited Parts5/11/2005
en Alert Lifting System - Main Rotor System - Introduction of a Storage Time for Tension Torsion-Straps12/3/2018
en Alert Tail Rotor - Check of Balance Weights and Control Lever12/12/2008
en Alert Flight Controls - Main Rotor Controls - Modification of Cyclic Stick Lock/Centering5/8/2009
4 en Alert Flight Control System - Main Rotor Controls - Removal of Swashplate Bellows5/23/2016
5 en Alert Flight Control System - Main Rotor Controls - Removal of Swashplate Bellows7/25/2017
en Emergency Alert Main Rotor System - Swashplate - Check of Swashplate1/11/2023
2 en Alert Optional Equipment - Rescue Hoist - Deactivation of Cable Cutter Function on Control Grip1/24/2018
en Emergency Alert Main Rotor System - Swashplate - Check of Swashplate1/11/2023
Service Bulletins: EC120
NameRevisionLangSubjectDate
en Mandatory Limitations - Flight Restriction for Engine-to-MGB Coupling Tube Assembly and Engine Support Fitting12/23/1999
en Alert Limitations - Engine Mount7/15/2003
en Emergency Alert Limitations - Emergency Floatation Gear Control on Lighting and Ancillary Control Unit (LACU)9/18/2008
en Alert Corrective Measure - Limitations - Tail Rotor Hub - Introduction of a New Part Number and Re-Identification of Equipped Blades of Tail Rotor Hub7/18/2018
en Mandatory Time Limits - Check of Engine-to-MGB Coupling Tube Assembly9/23/1999
en Mandatory Time Limits - Check of Engine-to-MGB Coupling Tube Coupling Assembly7/20/2000
en Alert Time Limits - Maintenance Checks - Emergency Floatation Gears - Periodic Check of Floats with Intervals in Hours6/8/2009
1 en Alert Time Limits - Maintenance Checks - Checks for Crack in Main Rotor Hub2/19/2010
en Alert Time Limits - Maintenance Checks - Main Rotor Hub - Inspection of Rotating & Non-Rotating Scissors Bolts6/11/2019
1 en Alert Time Limits - Maintenance Checks - Main Rotor Hub - Inspection of Rotating & Non-Rotating Scissors Bolts10/5/2020
1 en Emergency Alert Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Body11/8/2019
2 en Emergency Alert Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Body2/8/2021
en Emergency Alert Electrical Power - Emergency Switch (EMER SW) Wiring4/22/2010
en Alert Equipment and Furnishings - Emergency Floatation Gear - Protector Installation on Rear Bracket and Supply Couplings7/11/2011
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses2/12/2020
1 en Alert Landing Gear - Landing Gear - Inspection for Corrosion on Landing Gear10/17/2022
1 en Alert Doors - Sliding Door - Attachment of Sliding Door Star Support1/25/2013
1 en Alert Doors - Reinforcement of Door Locking/Unlocking Mechanism7/12/2016
en Fuselage - Rear Fuselage - Repair at Tail Boom VHF Attachment11/26/2020
1 en Alert Fuselage - Rear Fuselage - Corrosion on Tail Boom11/26/2020
en Alert Main Rotor - Check of Main Rotor Hub - Check of Scissors Bolts8/23/2018
en Rotor Drive(s) - Installation of a Reinforced Engine-to-MGB Coupling Tube P/N C631A1101101 and a New Engine Mount Fitting Assembly11/10/1999
en Alert Rotor Flight Control - Yaw Control Protection7/30/2001
1 en Alert Rotor Flight Controls - New Thrush Washers for Cyclic Stick Friction10/24/2005
en Power Plant - Spring-Type Engine Suspension System5/13/2004
Service Bulletins: EC130
NameRevisionLangSubjectDate
1 en Emergency Alert Equipment & Furnishings - Cargo Swing - Inspection of Cargo Swing Frame5/15/2023
2 en Alert Limitation - Fuel System and Check - FADEC - Flight Manual Procedure2/17/2014
en Alert Limitations - Engine-MGB Coupling Shaft - New Identification & Serialization of Engine-MGB Coupling Shaft7/15/2021
en Alert Time Limits - Maintenance Checks - Emergency Floatation Gears - Periodic Check of Floats with Intervals in Hours6/8/2009
2 en Emergency Alert Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)8/13/2013
3 en Emergency Alert Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)6/15/2015
1 en Emergency Alert Time Limits - Maintenance Checks - Twist Grip - Checking and Ensuring Water-Tightness of Connectors on Microswitches 53Ka, 53Kb and 65K (IDLE / FLIGHT Modes)6/15/2015
en Emergency Alert Fuselage - Check of Tail Boom / Fenestron Junction Frame6/6/2014
2 en Emergency Alert Fuselage - Check of Tail Boom / Fenestron Junction Frame2/20/2015
7 en Emergency Alert Fuselage - Check of Tail Boom / Fenestron Junction Frame3/21/2018
en Emergency Alert Intervals - Inspections - Cooling System - Periodic Visual Checks of Engine / MGB Oil Fan Hopper10/20/2014
en Alert Time Limits - Maintenance Checks - Fuselage - Check for Presence of Main Gear Box (MGB) Suspension Bar Attachment Bracket Screw Head7/16/2018
en Alert Time Limits - Maintenance Checks - Tail Rotor - Inspection of Tail Rotor Blades8/10/2020
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links2/9/2021
en Emergency Alert Time Limits - Maintenance Checks - Aft Fuselage - Visual Inspection of Rear Transmission Bearing Support10/27/2021
1 en Emergency Alert Time Limits - Maintenance Checks - Aft Fuselage - Visual Inspection of Rear Transmission Bearing Support12/16/2021
en Alert Time Limits - Maintenance Checks - Main Rotor Drive - Check of Main Gear Box (MGB) Bevel Wheel1/25/2023
en Emergency Alert Tail Rotor Drive - Tail Rotor Drive Shaft - Balancing Check of Tail Rotor Drive Line12/14/2022
1 en Emergency Alert Tail Rotor Drive - Tail Rotor Drive Shaft - Balancing Check of Tail Rotor Drive Line11/2/2023
en Alert Equipment and Furnishings - Emergency Floatation Gear - Protector Installation on Rear Bracket and Supply Couplings7/11/2011
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses2/12/2020
en Alert Fuel - In-Flight Loss of Fuel Bleed Lever3/4/2004
1 en Alert Landing Gear - Skid Type Landing Gear - Inspection for Corrosion on Landing Gear10/17/2022
1 en Alert Doors - Sliding Door - Attachment of Sliding Door Star Support1/25/2013
1 en Alert Doors - Reinforcement of Door Locking/Unlocking Mechanism7/12/2016
4 en Fuselage - Tail Boom - Patches on EC130 Fenestron / Tail Cone Link4/28/2020
en Alert Fuselage - Air Intake Cowling Attachment Fittings9/11/2003
en Mandatory Alert Fuselage - Containment Box Structure Installation for Cabin Vibration Damper Weights7/19/2006
1 en Emergency Alert Fuselage - Check of Tail Boom / Fenestron Junction Frame4/15/2014
en Windows - Center Windscreen Improvement11/16/2010
en Alert Main Rotor - Swashplates - Check of Rotating Star4/28/2014
en Alert Main Rotor - Main Rotor Hub - Check of Main Rotor Hub / Mast Attachment Screws2/15/2017
en Alert Main Rotor - Main Rotor Mast - Check of Bearing Retaining Rings of Main Rotor Mast9/17/2018
en Alert Tail Rotor Drive - Check of Perpendicularity of Bearing No. 1 and Check for Absence of Cracks and Loosening of Rivets in Tube-to-Flange Attachment of the Tail Rotor Drive Center Section Shaft11/16/2005
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls2/19/2007
\ en Alert Rotor Flight Controls - Collective Pitch Control - Adjustment of Low Pitch Locking on Pilot's Collective Pitch Control2/23/2016
en Emergency Alert Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod7/25/2019
en Emergency Alert Rotor Flight Control - General - Inspection for Conformity of Flexballs4/29/2022
en Alert Power Plant - Interference between Bleed Valve Air Exhaust Duct and Engine Fuel Line5/12/2003
en Alert Engine Controls - Check of Twist Grip Drive Tube and Control Pinion Attachment2/10/2006
1 en Emergency Alert Electrical Harnesses - Interference between Electrical Harnesses and Bottom Structure Fairings4/17/2007
Service Bulletins: EC135
NameRevisionLangSubjectDate
en Alert Air Vehicle General - General Information - Inspection of Additional Titanium Bolts5/4/2020
en Alert Airworthiness Limitations - Tail Rotor - Life Limits for Hub Body9/11/2017
1 en Alert Airworthiness Limitations - Tail Rotor - Introduction of a New P/N for Tail Rotor Head Assembly & Blade Assembly12/21/2020
1 en Alert Ventilation/Heating - Air Conditioning System - Installation of an Isolation Mat in Area of Spring Resistor8/2/2000
en Emergency Alert Air Conditioning - Mechanical Air Conditioning - Inspection of Compressor Bearing Block6/6/2011
1 en Alert Auto Flight System - Longitudinal, Lateral and Yaw Actuator - Check SEMA/Control Rod for Correct Attachment Hardware1/28/2013
1 en Alert Electrical Power Supply - Direct Current Distribution - Separation of Power Supply Lines5/24/2007
en Alert Equipment/Furnishings - Emergency Equipment - Removal of Strap from Emergency Flashlight5/20/2021
en Alert Equipment / Furnishings - Cockpit Furnishings - IFR-Screens Must Not be Used on Helicopters5/23/2022
2 en Alert Fire Protection System - Engine Fire Extinguishing System - Retrofit of Heat-Resistant Injection Tubes12/19/2011
en Alert Hydraulic Power System - Link Hydraulic Lines Fuselage / Tailboom - Fixing of "Additional Hydraulic Shielding Hose"2/24/1999
en Alert Central Warning System - Check of Emergency Off Switches12/19/2024
1 en Alert Indicating and Recording Systems - Flight Control and Navigation Indication System & Replacement of Primary Flight Displays (PFD) and/or Replacement of Navigation Displays (ND)9/25/2001
2 en Alert Indicating and Recording Systems - Flight Control and Navigation Indication System & Replacement of Primary Flight Displays (PFD) and/or Replacement of Navigation Displays (ND)11/15/2001
en Alert Landing Gear - Emergency Floatation System - Assembly of New Removable Parts of Emergency Flotation System Version II9/13/2004
1 en Alert Landing Gear - Emergency Flotation System - Inspection of Flotation Supply Hoses2/12/2020
Cor en Fuselage - Rear Structure - Attach Frame Reinforcement to Ring Frame X9227 between Rear Structure Tube and Fenestron Box11/13/2009
1 en Alert Inspection of Stator8/8/1997
5 en Alert Inspection of Stator1/18/2006
en Alert Fuselage - Tail Boom - Replacement of Bearing Supports8/14/1998
3 en Alert Fuselage - Tail Boom - Measurement of Vibrations on Tail Rotor Drive Shaft and Replacement of Roller Bearing Attaching Hardware at Bearing Locations9/2/1998
en Alert Fuselage - Tail Boom - Replacement of Attachment Hardware at Bearing Location I of Tail Rotor Drive Shaft with Modified Parts3/23/1999
2 en Alert Fuselage - Tail Boom - Crack Inspection on Connecting Frame Flange and Modification of Bearing Attachment at Bearing Location I7/22/1999
en Alert Fuselage - Cable Channel - Inspection of Wire Harnesses and Modification of Side Channel Covers1/18/2007
1 en Alert Fuselage - Cable Channel - Inspection of Wire Harnesses and Modification of Side Channel Covers6/22/2007
en Alert Fuselage - Rear Structure - Accomplish Visual Inspection of Ring Frame Between Rear Structure Tube and Fenestron Housing for Cracks10/13/2008
en Alert Fuselage - Rear Structure - Visual Inspection of Ring Frame X9227 (with Blind Rivet with Rounded Head Design) between Rear Structure Tube and Fenestron Housing for Cracks11/19/2013
en Alert Main Rotor System - Main Rotor Hub-Shaft & Crack Inspection at Main Rotor Hub-Shaft5/5/1999
2 en Alert Main Rotor System - Main Rotor Hub-Shaft & Crack Inspection at Main Rotor Hub-Shaft10/12/1999
3 en Alert Main Rotor System - Main Rotor Hub-Shaft & Crack Inspection at Main Rotor Hub-Shaft11/10/2000
en Alert Main Rotor System - Main Rotor Blade - Inspect Screw Connection of Bearing Support for Correct Fit, Replacement of Screw Connection7/1/1999
1 en Alert Main Rotor System - Main Rotor Blade - Inspect Screw Connection of Bearing Support for Correct Fit, Replacement of Screw Connection11/16/1999
en Alert Main Rotor System - Sliding Sleeve - Extension of Preflight Check6/23/2005
7 en Alert Main Rotor System - Main Rotor Hub-Shaft - Visual Inspection of Upper and Lower Hub-Shaft Flange for Cracks10/22/2012
1 en Alert Main Rotor Drive - Torque Strut - Reduction of Life Limit for Torque Strut & Visual Inspection on Torque Struts and on Emergency Stop3/12/2001
2 en Alert Main Rotor Drive - Torque Strut - Reduction of Life Limit for Torque Strut & Visual Inspection on Torque Struts and on Emergency Stop6/26/2002
4 en Alert Main Rotor Drive - Torque Strut - Reduction of Life Limit for Torque Strut & Visual Inspection on Torque Struts and on Emergency Stop7/7/2003
3 en Alert Main Rotor Drive - Main Transmission - Introduction of an Oil Analysis and Adaption of Measures After Indication of Chip Detector6/16/2008
5 en Alert Main Rotor Drive - Main Transmission - Introduction of an Oil Analysis and Adaption of Measures After Indication of Chip Detector9/6/2011
2 en Alert Main Rotor Drive - Main Transmission - Check of Screws at Lower Hub-Shaft Bearing for Correct Attachment9/12/2008
en Alert Main Rotor Drive - Main Transmission - Retrofit of a Corrugated Washer in Filter Housing10/11/2010
2 en Alert Main Rotor Drive - Main Transmission - Retrofit of a Corrugated Washer in Filter Housing12/5/2016
en Emergency Alert Rotor Blades - Inspection of Tail Rotor Blades for Cracks1/25/2024
en Alert Tail Rotor - Tail Rotor Blades - Reduction of Life Time for Specified Tail Rotor Blades8/20/2018
1 en Alert Tail Rotor - Tail Rotor Blades - Reduction of Life Time for Specified Tail Rotor Blades10/21/2020
en Alert Tail Rotor - Tail Rotor Blade - Inspection of Drain Hole Alignment of Blade Assembly11/11/2020
1 en Alert Tail Rotor - Tail Rotor Blade - Inspection of Drain Hole Alignment of Blade Assembly2/4/2021
1 en Rotor Flight Control - Main Rotor Actuator - Inspection of Main Rotor Actuator (Single-Axis Actuators)5/10/2019
en Alert Rotor Flight Control - Hydraulic Actuators - Check of Serial Number of and, if Necessary, Replacement of Main Rotor Actuator10/31/2002
1 en Alert Rotor Flight Control - Tail Rotor Controls - Inspection of Linear Transducer (LVDT COLLECTIVE) Bearing and Modification of Rod and Floor10/18/2006
en Alert Rotor Flight Control - Cyclic Controls - Modification of Cyclic-Stick-Locking Device/-Centering Device4/14/2008
en Alert Rotor Flight Controls - Tail Rotor Controls - Inspection of Control Rod and Ball Pivot12/13/2007
2 en Alert Rotor Flight Controls - Tail Rotor Controls - Inspection of Control Rod and Ball Pivot3/17/2008
4 en Alert Rotor Flight Controls - Tail Rotor Controls - Inspection of Control Rod and Ball Pivot4/3/2017
en Alert Rotor Flight Controls - Tail Rotor, Cyclic and Collective Controls - Check Bearings for Correct Attachment and Retrofit of Bushings and Washers4/28/2008
3 en Alert Rotor Flight Controls - Tail Rotor, Cyclic and Collective Controls - Check Bearings for Correct Attachment and Retrofit of Bushings and Washers12/16/2009
en Alert Rotor Flight Control - Tail Rotor Controls - Retrofit of a Teflon Washer3/30/2017
en Alert Rotor Flight Control - Cyclic Stick - Retrofit of Cyclic Stick Weight Compensation2/7/2018
en Alert Rotor Flight Control - Main Rotor Actuator - One-Time Visual Inspection of Main Rotor Actuator11/28/2018
1 en Emergency Alert Rotor Flight Control - Main Rotor Actuator - Check of Main Rotor Actuator (Single-Axis Actuators)4/23/2019
2 en Emergency Alert Rotor Flight Control - Main Rotor Actuator - Check of Main Rotor Actuator (Single-Axis Actuators)3/30/2020
en Emergency Alert Rotor Flight Control - Tail Rotor Controls - Inspection for Conformity of Flexball4/29/2022
1 en Alert Power Plant EC 135 T1 - Automatic Engine Control - Synchronization Procedure for Fuel Control Components for Sustaining Automatic Engine Control7/20/2000
en Alert Power Plant T1 - Automatic Engine Control & Software Improvement TU19C on EECU (FADEC)8/30/2001
1 en Alert Power Plant EC135 T1 - Automatic Engine Control & Software Improvement TU45C on FADEC Without Increase of OEI Power10/18/2001
en Alert Power Plant T1 - Automatic Engine Control & Description of a More Detailed Starting Procedure in Order to Avoid Possible Start-up Overspeed10/8/2001
en Alert Power Plant EC135 T1 - Automatic Engine Control - Synchronization Procedure for Fuel Control Components for Sustaining Automatic Engine Control8/6/2002
2 en Emergency Alert Optional Equipment - External Mounted Hoist System - Inspection of Hoist Boom for Cracks6/23/2010
en Alert Optional Equipment - External Mounted Hoist - Unintended Detachment of Hook Assembly from Cable8/2/2017
en Alert Optional Equipment - Rescue Hoist - Modification of Hook Assembly10/29/2020
en Alert Optional Equipment - Outboard Load System - Inspection of Aft & Fwd Fitting Assembly12/17/2020
en Alert Air Vehicle General - General Information - Inspection of Additional Titanium Bolts5/4/2020
1 en Alert Airworthiness Limitations - Tail Rotor - Introduction of a New P/N for Tail Rotor Head Assembly & Blade Assembly12/21/2020
en Alert Equipment / Furnishings - Cockpit Furnishings - IFR-Screens Must Not be Used on Helicopters5/23/2022
1 en Alert Landing Gear - Emergency Flotation System - Inspection of Flotation Supply Hoses2/12/2020
en Alert Tail Rotor - Tail Rotor Blades - Reduction of Life Time for Specified Tail Rotor Blades2/20/2018
1 en Alert Tail Rotor - Tail Rotor Blades - Reduction of the Life Time for Specified Tail Rotor Blades10/21/2020
en Alert Tail Rotor - Tail Rotor Blade - Inspection of Drain Hole Alignment of Blade Assembly11/11/2020
1 en Alert Tail Rotor - Tail Rotor Blade - Inspection of Drain Hole Alignment of Blade Assembly2/4/2021
1 en Rotor Flight Control - Main Rotor Actuator - Inspection of Main Rotor Actuator (Single-Axis Actuators)5/10/2019
en Alert Rotor Flight Control - Cyclic Stick - Retrofit of Cyclic Stick Weight Compensation2/7/2018
1 en Alert Rotor Flight Control - Cyclic Stick - Retrofit of Cyclic Stick Weight Compensation2/16/2018
en Alert Rotor Flight Control - Main Rotor Actuator - One-Time Visual Inspection of Main Rotor Actuator11/28/2018
2 en Alert Rotor Flight Control - Main Rotor Actuator - Inspection of Main Rotor Actuator (Single-Axis Actuators)3/30/2020
en Emergency Alert Rotor Flight Control - Tail Rotor Controls - Inspection for Conformity of Flexball4/29/2022
Service Bulletins: EC155
NameRevisionLangSubjectDate
en Alert Limitations - Tail Rotor Pitch Change Control Rod7/4/2002
1 en Emergency Alert Limitations - Limitation Concerning Use of VIP 4-Seat Benches6/24/2009
en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"8/26/2014
1 en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"2/12/2019
5 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)3/25/2020
6 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)6/14/2021
3 en Emergency Alert Limitations - Tail Gear Box (TGB) P/Ns 365A33-6005-09 and 365A33-6005-106/14/2021
en Alert Tail Rotor - Tail Rotor Pitch Control Rod Double Bearing2/15/2006
2 en Emergency Alert Time Limits - Maintenance Checks - Fittings Attaching Upper Fin on Fenestron12/9/2010
1 en Alert Time Limits - Maintenance Checks - Tail Rotor Hub (TRH) - Visual Check of 10-Blade TRH Hub7/20/2011
1 en Mandatory Alert Time Limits - Maintenance Checks - External Life Rafts Installed in Footsteps9/1/2014
en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin7/21/2017
1 en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin3/27/2019
5 en Alert Main Rotor Drive - Main Gear Box - Periodic Check of MGB Magnetic Plugs, of Oil Filter, Check that there are No Particles in Bottom Housing & Replacement of MGB Planet Gears12/4/2018
en Alert Time Limits - Maintenance Checks - Fan Assembly - Inspection of Fan Hub1/6/2022
1 en Alert Electrical Power - Electrical and Electronic Panels - Protection of Panel 12 Alpha Wiring5/14/2004
en Equipment and Furnishings - Improved Security of Front and Rear 3- to 4-Men VIP Bench Seats6/25/2009
en Mandatory Alert Equipment and Furnishings - Electrical Bonding of Hoist Cut-Off Connector6/1/2007
1 en Alert Equipment and Furnishings - Pilot and Co-Pilot Seats - Inspection of Rear Beam of Seat8/9/2012
1 en Mandatory Alert Equipment and Furnishings - Life Raft Installation Improved External Life Raft Deployment Controls - Corresponds to Modification 365A084711.012/2/2015
en Alert Equipment and Furnishings - Label "Do Not Stow Anything under Any Seat"2/12/2019
en Alert Equipment & Furnishings - Emergency Floatation - Check of Front Emergency Floatation Hoses1/7/2020
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses2/12/2020
en Alert Indicating and Recording System - Landing Gear Extension Inoperative8/20/2003
en Alert Indicating and Recording System - Modification of Power Supply to Landing Gear PCB 10 and 11 Alpha8/20/2003
1 en Alert Landing Gear - Wheel Brake Hydraulic Hose Bursting6/16/2004
2 en Alert Navigation - Attitude and Heading Reference System (AHRS) - Modification of Wiring of FLIGHT/GROUND Logic (Connector 11 ALPHA)1/30/2018
en Alert Navigation - Attitude and Heading Reference System (AHRS) - Connection Modification on Connector "11 ALPHA" (AHRS)2/19/2018
en Alert Doors - Crew Doors - Functional Test of Crew Door Jettisoning System7/22/2015
en Alert Doors - External Jettisoning of Pilot & Co-Pilot Doors9/30/2020
1 en Alert Fuselage - Draining Tank Box Area9/21/2011
1 en Alert Fuselage - Cowlings & Fairings - Inspection of Main Gearbox (MGB) Fixed Cowling Front Fitting12/20/2018
en Alert Fuselage - Cowling & Fairings - Modification of MGB Fixed Cowling Attachment12/20/2018
en Alert Fuselage - Engine Cowlings - Inspection of Engine Upper Fixed Cowling10/27/2021
en Alert Windows - Jettisonable Windows - Check of Press-Studs on Window Jettisoning System8/10/2015
5 en Main Rotor Drive - Replacement of Epicyclic Reduction Gear on MGB3/6/2019
en Emergency Alert Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)5/7/2008
1 en Alert Main Rotor Drive - Tail Rotor Drive Flange - Installation of Rear Output Stop1/31/2019
en Alert Main Rotor Drive - Indicating - Replacement of Electrical Magnetic Plug of Main Gearbox (MGB) Pump Intake with Non-Electrical Magnetic Plug7/11/2018
en Emergency Alert Main Rotor Drive - Main Gear Box (MGB) - Removal of MGB to Replace MGB Housing2/19/2020
en Alert Tail Rotor - Installation of a Tuning Weight on Each Blade of Quiet Fenestron Tail Rotor10/30/2002
1 en Rotors - TGB Control Shaft Guide Bush Replacement3/21/2011
en Emergency Alert Tail Rotor Drive - Tail Gear Box (TGB) - Checking there is No Oil Retention in Recess of TGB Housing7/10/2019
1 en Alert Rotor Flight Controls - Check of Collective Pitch Lever Restraining Tab2/25/2009
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls2/19/2007
en Alert Rotor Flight Controls - Collective Pitch Controls - Replacement of Switch Guard of "Shear" Control on Pilot & Co-Pilot Collective Sticks7/25/2019
en Emergency Alert Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod7/25/2019
en Alert Power Plant - Firewall - Modification of Material of Firewall Edging10/25/2022
en Alert Engine Indicating - Non-Operation of Red "GOV" Warning Lights After Embodiment of Modifications to "Engine Emergency Governing System" Installation Provisions5/7/2003
Service Bulletins: EC175
NameRevisionLangSubjectDate
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses2/12/2020
Service Bulletins: EC225
NameRevisionLangSubjectDate
en Alert Limitations - Prohibits Use of Seats Equipped with Harnesses Fitted with a Belt Buckle Blanking Plug, in Flight4/15/2008
en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"8/26/2014
2 en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"11/6/2019
1 en Emergency Alert Limitations - Fittings and Mounts - Periodic Replacement of Main Gearbox (MGB) Suspension Bar Attachment Pins8/25/2017
1 en Emergency Alert Limitations - Lateral Sliding Plug Doors - Prohibition Against Jettisoning of RH Lateral Sliding Plug Door for Helicopters Equipped with Hoist Arm6/28/2018
en Emergency Scheduled/Unscheduled Maintenance - Inspection of MRH Sleeves11/8/2024
1 en Alert Time Limits - Maintenance Checks - Check of Attachment of Front and Rear MGB Suspension Bar Attaching Fittings12/6/2007
2 en Emergency Alert Time Limits/Maintenance Checks - Main Rotor Hub - Checking Main Rotor Hub Coning Stop Support Attachment Lugs and Dome Fairing Support Attachment Lugs2/3/2009
1 en Emergency Alert Time Limits - Maintenance Checks - Readjustment of Dome Fairing Support-to-Dome Fairing Attachment Screw Tightening Torque2/3/2009
2 en Emergency Alert Time Limits - Maintenance Checks - Check of Bonding of Stainless Steel Protective Strip on Leading Edge of Main Rotor Blades4/22/2013
2 en Emergency Alert Time Limits - Maintenance Check - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification4/23/2009
3 en Emergency Alert Time Limits - Maintenance Check - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification7/13/2012
en Alert Time Limits - Maintenance Checks - Main Rotor Mast Assembly - Inspection of Swashplate Sub-Assembly7/12/2012
1 en Alert Time Limits - Maintenance Checks - Check of Tail Rotor Control Turnbuckle6/5/2013
en Alert Time Limits - Maintenance Checks - Modification of Emergency Spraying System and its Maintenance7/14/2013
1 en Alert Time Limits - Maintenance Checks - Visual Check of Splicing of Frame X52952/9/2021
en Alert Time Limits - Maintenance Checks - Main Rotor Blades - Periodic Visual Check of Condition of Blade Attachment Pins12/22/2014
2 en Alert Time Limits - Maintenance Checks - Main Rotor Blades - Periodic Visual Check of Condition of Blade Attachment Pins6/26/2018
1 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System2/8/2018
2 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System4/10/2019
3 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System2/10/2020
2 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53047 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53047 Helicopters10/7/2016
3 en Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53047 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53047 Helicopters2/25/2017
4 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53047 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53047 Helicopters3/17/2017
5 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53047 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53047 Helicopters6/23/2017
6 en Emergency Alert Time Limits - Maintenance Checks - Main Rotor Drive - Limitation of Epicyclic Modules; Check of MGB Particle Detectors; Check of FFMP (Full Flow Magnetic Plug) for Post Mod 07 53047 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53047 Helicopters7/25/2017
1 en Emergency Alert Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate11/16/2017
2 en Emergency Alert Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate2/26/2019
4 en Emergency Alert Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate2/28/2022
en Alert Time Limits - Maintenance Check - Main Rotor - Swashplate Assembly - Reduced Inspection Interval Limit for Check of Swashplate Bearing3/31/2020
1 en Alert Time Limits - Maintenance Check - Main Rotor - Swashplate Assembly - Reduced Inspection Interval Limit for Check of Swashplate Bearing11/30/2020
1 en Alert Equipment & Furnishings - Modification of Hoist Control Power Supply12/14/2020
1 en Alert Equipment and Furnishings - Pilot and Co-Pilot Seats - Inspection of Rear Beam of Seat8/9/2012
en Emergency Alert Equipment and Furnishings - Emergency Floatation Gear - Check of Emergency Floatation Gear Installation9/25/2013
1 en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under Cabin Seats11/6/2019
en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under Cockpit Seats9/7/2017
en Alert Equipment and Furnishings - Emergency Flotation Gear - Installation of Flotation Gear Rear Fittings with Spherical Leveling Washers4/4/2018
2 en Alert Equipment and Furnishings - Emergency Flotation Gear - Installation of Flotation Gear Rear Fittings with Spherical Leveling Washers3/21/2019
1 en Alert Equipment and Furnishings - Life Rafts in Multipurpose Sponsons - Replacement of LH and RH Life Raft Release Bellcranks10/23/2019
en Alert Equipment & Furnishings - Hoist & Accessories - Addition of a Cable Protection on Hoist Shear Toggle Switch8/3/2023
1 en Alert Fuel - Fuel Supply Line of LH Engine - Replacement of Fuel Supply Line5/6/2022
en Alert Fuel System - Engine Fuel System - Check Bowls of RH & LH Fuel Filters4/25/2023
en Alert Ice and Rain Protection - Electric Multi-Purpose Air Intakes - Relocation of One of Two Power Supply Circuit Breakers of the Electric Multi-Purpose Air Intakes onto an Essential Bus Bar which cannot be Cut Off7/31/2013
en Alert Light - Landing Light - Metallisation Landing Search Light12/15/2022
en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/3/2014
1 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door8/29/2017
en Alert Doors - Side Stairway Door - Improvement of Locking System8/29/2017
1 en Alert Doors - Side Stairway Door - Improvement of Locking System10/15/2019
2 en Alert Doors - Side Stairway Door - Improvement of Locking System2/25/2020
en Alert Doors - Flap Doors - VIP Flap Door Jettisoning Instruction Placard Issue1/22/2020
en Fuselage - Replacement of Intermediate Gear Box (IGB) Fairing - Corresponds to MOD 07268193/9/2015
en Fuselage - Upper Structure - Procedure for Replacement of RH & LH Splices Under Plates & Brackets of Main Gear Box (MGB) Bars2/9/2021
5 en Alert Fuselage - Intermediate Gear Box (IGB) Fairing3/9/2015
1 en Emergency Alert Fuselage - Check for Presence of Blind Hole in TGB Attachment Fittings1/4/2008
en Alert Fuselage - Pilot's Floor - Absence of Floor Attachment Screws Under Pilot's and Copilot's Seats2/17/2010
en Alert Structure - Jettisoning System - Functional Check of Emergency Jettisoning System of Sliding Plug Doors8/18/2014
en Alert Windows - Jettisonable Windows - Check of Jettisonable Emergency Exit Window Panels8/8/2012
en Alert Windows - Cabin Windows - Check of Press-Studs on Window Jettisoning System7/16/2015
1 en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System2/10/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System2/10/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System2/10/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System2/10/2020
en Alert Windows - Cabin Windows - Improvement to VIP Window Jettisoning2/8/2018
1 en Main Rotor - MRH Cone Restrainer Support Reinforcement7/10/2009
1 en Alert Main Rotor - Main Rotor Mast - Inspection of Upper Stop Fixation Screws & Cover Plate2/28/2023
en Emergency Alert Main Rotor - Main Rotor Hub (MRH) - Inspection of MRH Sleeves6/30/2022
en Main Rotor Drive - MGB Lubrication System - Addition of a Magnetic Plug between MGB & Oil Cooler6/23/2017
1 en Main Rotor Drive - MGB Lubrication System - Addition of a Magnetic Plug between MGB & Oil Cooler7/25/2017
2 en Main Rotor Drive - MGB Lubrication System - Addition of a Magnetic Plug between MGB & Oil Cooler11/14/2018
1 en Emergency Alert Main Rotor Drive - Epicyclic Module - Replacement of Epicyclic Module Second Stage Planet Gear Assemblies10/7/2016
2 en Emergency Alert Main Rotor Drive - Epicyclic Module - Replacement of Epicyclic Module Second Stage Planet Gear Assemblies6/23/2017
1 en Alert Main Rotor Drive - MGB Emergency Spraying System - Increase in Reliability of EMLUB System by Addition of a Relay10/7/2016
en Alert Tail Rotor - Tail Rotor Assembly - Check of Angular Clearances of Tail Gear Box (TGB)6/30/2021
en Alert Rotor Flight Controls - Collective Controls - Replacement of Protective Cover of "SHEAR" Control on Pilot and Copilot Collective Sticks3/26/2018
2 en Alert Power Plant - LH Power Plant Fuel Supply Hose - Check of Fuel Supply Hose of LH Power Plant5/21/2021
Service Bulletins: EC725
NameRevisionLangSubjectDate
1 en Emergency Alert Limitations - Fittings and Mounts - Periodic Replacement of Main Gearbox (MGB) Suspension Bar Attachment Pins8/25/2017
2 en Emergency Alert Time Limits/Maintenance Checks - Main Rotor Hub - Checking Main Rotor Hub Coning Stop Support Attachment Lugs and Dome Fairing Support Attachment Lugs2/3/2009
1 en Emergency Alert Time Limits - Maintenance Checks - Readjustment of Dome Fairing Support-to-Dome Fairing Attachment Screw Tightening Torque2/3/2009
2 en Emergency Alert Time Limits - Maintenance Checks - Check of Bonding of Stainless Steel Protective Strip on Leading Edge of Main Rotor Blades4/22/2013
2 en Emergency Alert Time Limits - Maintenance Check - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification4/23/2009
3 en Emergency Alert Time Limits - Maintenance Check - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification7/13/2012
1 en Emergency Alert Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate11/16/2017
2 en Emergency Alert Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate2/26/2019
4 en Emergency Alert Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate2/28/2022
en Emergency Alert Equipment and Furnishings - Emergency Floatation Gear - Check of Emergency Floatation Gear Installation9/25/2013
en Emergency Alert Equipment & Furnishings - Hoist System - Check of Hoist Attachments Fitting1/25/2022
en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/3/2014
1 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Emergency Alert Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door8/29/2017
5 en Alert Fuselage - Intermediate Gear Box (IGB) Fairing3/9/2015
1 en Emergency Alert Fuselage - Check for Presence of Blind Hole in TGB Attachment Fittings1/4/2008
en Emergency Alert Main Rotor - Main Rotor Hub (MRH) - Inspection of MRH Sleeves6/30/2022
Service Bulletins: H160
NameRevisionLangSubjectDate
en Alert Scheduled-Unscheduled Maintenance - Lubrication of Locking Fingers on Windows Jettisonable Systems1/9/2025
en Emergency Scissors - Check of Play of Spherical Bearing of Rotating Scissors10/21/2024
Service Bulletins: MBB-BK117
NameRevisionLangSubjectDate
1 en Alert Change to Maintenance Manual10/14/1994
2 en Alert Change to Maintenance Manual9/2/2005
3 en Alert Change to Maintenance Manual8/7/2008
en Alert Main Transmission - Visual Inspection of Rotor Mast Flange for Cracks8/27/1997
1 en Alert Main Transmission - Visual Inspection of Rotor Mast Flange for Cracks7/28/2017
en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap8/6/1999
1 en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap8/31/1999
en Alert Main Rotor System - Introduction of a Life Limit for Main Rotor Blades with Bolted Lead Inner Weights2/14/2005
en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps3/29/2021
1 en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps5/6/2021
en Alert Main Rotor System - Rotor Blades - Reduced Inspection Interval Times for Blade Thimble2/19/2018
2 en Fuselage - Retrofit of a Hook System for Doors of Transmission and Engine Cowlings4/30/1999
2 en Alert Fuselage - Sliding Door - Affixing an Adhesive Seal on Door Jettison System3/30/2016
3 en Alert Visual Check and Repair of Tail Boom Vertical Fin5/5/1997
4 en Alert Visual Check and Repair of Tail Boom Vertical Fin12/19/1997
5 en Alert Visual Check and Repair of Tail Boom Vertical Fin10/4/2005
en Alert Tail Rotor Drive - Replacement of Bearings in Tail Rotor Transmission and Intermediate Gearbox, Reduction of Inspection Interval for Magnetic Plug4/14/2003
1 en Alert Tail Unit - Inspection of Wall Thickness of Skin Paneling of Vertical Fin7/3/2003
en Alert Tail Rotor - Check of Balance Weights and Control Lever9/23/2008
en Alert Tail Unit Assembly - Tail Rotor Gearbox - Inspection of Tail Rotor Gearbox Housing for Cracks5/24/2016
en Alert Tail Unit Assembly - Tail Rotor Gearbox - Inspection of Tail Rotor Gearbox Bellcrank Attachment Arm for Cracks1/31/2018
en Alert Central Warning System - Check of Emergency Off Switches12/19/2024
en Alert Main Rotor Controls - Modification of Cyclic Stick Lock/Centering12/22/2008
4 en Alert Flight Control System - Flight Controls Main Rotor - Removal of Swashplate Bellows5/23/2016
5 en Alert Flight Control System - Flight Controls Main Rotor - Removal of Swashplate Bellows7/25/2017
en Emergency Alert Main Rotor System - Swashplate - Check of Swashplate1/11/2023
en Alert Power Plant - Power Control - Accomplishment of "MAX N1 CHECK"10/24/2006
4 en Alert Power Plant - Power Control - Accomplishment of "MAX N1 CHECK"12/11/2007
en Mandatory Alert Power Plant - N2 Controls - Visual Inspection of N2 Control Arm6/24/2013
en Emergency Alert Main Rotor System - Swashplate - Check of Swashplate1/11/2023
en Emergency Anti-Torque Rotor Control (Yaw Control) - Recurring Inspection of Tail Rotor Actuator12/9/2024
1 en Alert Optional Equipment - Rescue Winch - Deactivation of Cable Cutter Function on Operator Handle8/4/2011
2 en Alert Electrical Systems - Inspection / Retrofit of a Ground Reference Connection to Generator Voltage Regulator5/4/2009
2 en Alert Airworthiness Limitations - Tail Rotor - Reduction of Lifetime of Certain Bevel Gears4/28/2010
en Alert Air Conditioning - Air Distribution System - Inspection and Improved Attachment of Air Inlet Cover Ring11/16/2015
1 en Alert Auto Flight System - Yaw-Actuator - Inspect Yaw-SEMA/YawSEMA Control Rod for Correct Attachment Hardware8/3/2009
en Alert Electrical Power - Starter/Generator - Visual Monitoring of Power Display GEN AMPS on VEMD when a Generator is Deactivated12/20/2010
1 en Alert Electrical Power - Starter/Generator - Visual Monitoring of Power Display GEN AMPS on VEMD when a Generator is Deactivated8/29/2011
1 en Mandatory Alert Electrical Power - Electrical Load Distribution - Inspection of Terminal Lugs on Distribution Boxes and Diode Boxes11/25/2014
en Alert Electrical Power - Overhead Panel - Retrofit of Retaining Plates9/14/2016
en Alert Equipment/Furnishings - Emergency Flashlight - Removal of Strap from Emergency Flashlight8/25/2021
en Alert Equipment / Furnishings - Cockpit Furnishings - IFR-Screens Must Not be Used on Helicopters5/23/2022
en Alert Fire Protection System - Fire Extinguishing System - Retrofit of Improved Clamps for Injection Tubes1/22/2007
en Alert Hydraulic Power System - Plate Assembly - Installation of Attachment Hardware with Double Locking10/12/2015
3 en Alert Hydraulic Power System - Plate Assembly - Installation of Attachment Hardware with Double Locking12/19/2017
1 en Alert Landing Gear- Emergency Flotation System - Inspection of Flotation Supply Hoses2/12/2020
en Alert Doors and Service Covers - Jettisonable Sliding Door - Inspection of Emergency Jettison System4/26/2011
4 en Alert Main Rotor System - Swashplate - Removal of Swashplate Bellows5/23/2016
5 en Alert Main Rotor System - Swashplate - Removal of Swashplate Bellows7/25/2017
1 en Alert Main Rotor System - Vibration Absorber of Main Rotor Blade - Replacement of Spacers by Flanged Spacers10/28/2015
en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps3/29/2021
1 en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps5/6/2021
en Alert Tail Rotor System - Control Lever with Weights - Inspection of Control Lever12/21/2006
1 en Alert Tail Rotor System - Control Lever with Weights - Inspection of Control Lever7/9/2007
2 en Alert Tail Rotor System - Control Lever with Weights - Inspection of Control Lever8/6/2007
en Alert Tail Rotor Drive - Tail Rotor Drive Shaft - Inspection of Long Tail Rotor Drive Shaft for Correct Rivets5/4/2009
en Alert Tail Rotor Drive - Tail Rotor Gearbox - Inspection of Tail Rotor Gearbox Housing for Cracks5/24/2016
en Alert Tail Unit Assembly - Tail Rotor Gearbox - Inspection of Tail Rotor Gearbox Bellcrank Attachment Arm for Cracks1/31/2018
en Alert Rotor Flight Control - Cyclic Controls - Modification of Cyclic-Stick-Locking Device/-Centering Device4/14/2008
en Alert Rotor Flight Control - Tail Rotor- and Lateral Control - Check Bearings for Correct Attachment and Retrofit of Bushings4/28/2008
3 en Alert Rotor Flight Control - Tail Rotor- and Lateral Control - Check Bearings for Correct Attachment and Retrofit of Bushings2/8/2010
en Alert Rotor Flight Control - Rigging of Main Rotor Controls - Verify Correct Adjustment of Main Rotor Controls9/20/2010
2 en Alert Rotor Flight Control - Tail Rotor Control - Inspection of Bolt of Tail Rotor Actuator (TRA)12/15/2021
en Alert Rotor Flight Control - Main Rotor Actuator - Visual Inspection of Main Rotor Actuator7/7/2020
en Alert Rotor Flight Control - Upper Controls - Inspection for Correct Installation of Collective Bellcrank3/15/2021
en Emergency Alert Rotor Flight Control - General - Inspection for Conformity of Flexballs4/29/2022
5 en Power Plant - Inlet Barrier Filter System - Retrofit of Inlet Barrier Filter System5/31/2017
en Alert Power Plant - Power Control - Accomplishment of "MAX N1 CHECK"10/24/2006
3 en Alert Power Plant - Power Control - Accomplishment of "MAX N1 CHECK"12/11/2007
en Alert Engine Controls - N2 Controls - Visual Inspection of N2 Control Arm6/24/2013
1 en Alert Optional Equipment - External Mounted Hoist System - Check of Boom Support for Cracks6/23/2010
2 en Emergency Alert Optional Equipment - External Mounted Hoist System - Unintended Detachment of Hoist Damper Unit3/4/2014
4 en Emergency Alert Optional Equipment - External Mounted Hoist System - Unintended Detachment of Hoist Damper Unit2/12/2015
en Alert Optional Equipment - Outboard Load System - Introduction of Life Limit, a First Time & Repetitive Inspection & Replacement of Quick Release Pin Bolts7/24/2017
1 en Alert Wiring Harness - Inspection of Collective Lever (Pilot) Wiring Harness for Correct Position of Heat-Shrinkable Sleeve4/16/2015
1 en Alert Air Vehicle General - General Information - Inspection of Titanium Bolts10/16/2019
en Alert Air Conditioning - Air Distribution System - Improved Attachment of Air Inlet Cover Ring11/16/2015
en Alert Electrical Power - Overhead Panel - Retrofit of Retaining Plates9/14/2016
en Alert Equipment / Furnishings - Cockpit Furnishings - IFR-Screens Must Not be Used on Helicopters5/23/2022
en Alert Hydraulic Power System - Plate Assembly - Installation of Attachment Hardware with Double Locking10/12/2015
3 en Alert Hydraulic Power System - Plate Assembly - Installation of Attachment Hardware with Double Locking12/19/2017
1 en Alert Landing Gear - Emergency Flotation System - Inspection of Flotation Supply Hoses2/12/2020
3 en Alert Corrective Measure - IMA Platform and Modules - Aircraft Management Computer Software; - Update of Helionix Software Step 2 or Step 2.0.1 to Step 2.0.3; - Update of Helionix Software Step 3 (Maintenance Release 1 - MR1) to Step 3.0.26/6/2019
1 en Alert Main Rotor System - Vibration Absorber of Main Rotor Blade - Replacement of Spacers by Flanged Spacers10/28/2015
2 en Alert Main Rotor System - Swashplate - Removal of Swashplate Bellows5/23/2016
3 en Alert Main Rotor System - Swashplate - Removal of Swashplate Bellows7/25/2017
en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps3/29/2021
1 en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps5/6/2021
en Alert Main Rotor Drive - Main Gearbox - Re-Identifcation of Rotor Mast Nut & Helical Gear Support12/1/2016
en Alert Rotor Flight Control - Collective Controls - Inspection of CABLE CUT Switch Guard on Collective Lever for Correct Attachment4/2/2020
en Alert Rotor Flight Control - Main Rotor Actuator - Visual Inspection of Main Rotor Actuator7/7/2020
en Alert Rotor Flight Control - Upper Controls - Inspection for Correct Installation of Collective Bellcrank3/15/2021
en Emergency Alert Rotor Flight Control - General - Inspection for Conformity of Flexballs4/29/2022
1 en Power Plant - Inlet Barrier Filter System - Retrofit of Inlet Barrier Filter System8/2/2017
1 en Alert Power Plant - Engine Mounts - Inspection or Replacement of Engine Mount Bushings12/14/2018
1 en Emergency Alert Optional Equipment - External Mounted Hoist System Unintended Detachment of Hoist Damper Unit2/12/2015
en Alert Optional Equipment - Outboard Load System - Introduction of Life Limit, a First Time & Repetitive Inspection7/24/2017
en Alert Wiring Harness - Trim System - Wire Chafing Inside Backshells of Trim Connectors6/4/2019
1 en Alert Wiring Harness - Cabin Wiring Harness - Inspection of Wire Harness Behind Front PAX Panels for Damage12/9/2019
en Alert Wiring Harness - Cockpit Wiring Harness - Inspection of Wire Harness at Lateral Control Rod10/28/2020
en Alert Main Rotor System - Main Rotor Blade - Rework of Bearing Pin of Support Assembly6/29/2021
Service Information Letters
NameRevisionLangSubjectDate
en Incidences of Main Rotor Out of Track when Operating in Very Cold and High Altitude Conditions12/3/1992
Service Telexes: AS/SA 315
NameRevisionLangSubjectDate
en Tail Rotor Control Cable P/N 315a88 00.010 11/27/1987
en Limitations - Main Rotor Blade - Check of Blade Spar and Cuff in Cuff-to-Spar Assembly Area2/3/1998
Service Telexes: AS/SA 316
NameRevisionLangSubjectDate
en Limitations - Main Rotor Blade - Check of Blade Spar and Cuff in Cuff-to-Spar Assembly Area2/3/1998
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 3160
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 319
NameRevisionLangSubjectDate
en Limitations - Main Rotor Blade - Check of Blade Spar and Cuff in Cuff-to-Spar Assembly Area2/3/1998
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 321
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 330
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 332
NameRevisionLangSubjectDate
1 en Limitations - Check of Eye Bolt Hinge at MRH Blade Horn Assembly7/25/1997
en Limitations - By-Pass Valve Closing Check for Fuel Filters7/24/1998
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 350
NameRevisionLangSubjectDate
en Time Limits Check of Attachment Areas of Heat Shield of Tail Rotor Drive Shaft Forward Fairing8/3/2000
en Tail Rotor Drive5/13/1987
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 355
NameRevisionLangSubjectDate
en Starter Generator Vibrations10/27/1999
en Tail Rotor Drive5/13/1987
en Urgent Equipment and Furnishings Landing Light Operating Limitation8/2/2000
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 360
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 365
NameRevisionLangSubjectDate
en Cracks on Beams X 3826.7 and X 4338.7 Under Transmission Deck. Cracks on Transmission Deck2/24/1994
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 366
NameRevisionLangSubjectDate
en Cracks on Beams X 3826.7 and X 4338.7 Under Transmission Deck. Cracks on Transmission Deck2/24/1994
en Time Limits - Blades - Tie-Bar Kevlar Verification8/19/1992
Service Telexes: AS/SA 532
NameRevisionLangSubjectDate
1 en Limitations - Check of Eye Bolt Hinge at MRH Blade Horn Assembly7/25/1997
en Limitations - By-Pass Valve Closing Check for Fuel Filters7/24/1998
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 550
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 555
NameRevisionLangSubjectDate
en Starter Generator Vibrations10/27/1999
en Urgent Equipment and Furnishings Landing Light Operating Limitation8/2/2000
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: AS/SA 565
NameRevisionLangSubjectDate
en Cracks on Beams X 3826.7 and X 4338.7 Under Transmission Deck. Cracks on Transmission Deck2/24/1994
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks6/6/2000
Service Telexes: EC120
NameRevisionLangSubjectDate
en Time Limits - Check of Coupling Tube Assembly P/N C631A1002101 on Engine-to-MGB Coupling8/26/1999
Work Cards
NameRevisionLangSubjectDate
en Crack Detection7/30/2010
en Sliding Doors - Removal - Installation
en Sliding Doors - Adjustment
en Main Rotor Head7/31/2008
Miscellaneous
NameRevisionLangSubjectDate
en Engineering Report: Addendum ASB 53.00.42 & 53.00.431/29/2003
en Technical Data: EC120B11/30/2014
en Technical Data:  EC135 T3/P311/30/2014
en Technical Data:  EC14511/30/2014
en Technical Data:  EC145 T211/30/2014
en Technical Data:  EC145e11/30/2014
en Technical Data:  EC155 B111/30/2014
en Technical Data:  EC17511/30/2014
en Technical Data:  EC22511/30/2014
en Technical Data:  AS332 C1e11/30/2014
en Technical Data:  AS332 L1e11/30/2014
en Technical Data:  AS365 N3+11/30/2014
en Technical Data: Civil Range11/30/2014
en Telex Information: Tail Rotor Blades6/12/1998