The Aviation DataBase: Service Information: Airbus Helicopter
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Airworthiness Limitations
NameRevisionLangSubjectDate
10 en AS 355 E [Best viewed in Mozilla]09/14/2020
10 en AS 355 F [Best viewed in Mozilla]09/14/2020
10 en AS 355 F1 [Best viewed in Mozilla]09/14/2020
11 en AS 355 F2 [Best viewed in Mozilla]09/14/2020
10 en AS 355 N [Best viewed in Mozilla]09/14/2020
9 en AS 355 NP [Best viewed in Mozilla]02/04/2019
2 en EC135 P1,P2,P3,T1,T2,T3, limited to CDS,CPDS, P2+,T2+04/06/2021
2 en EC135 P3H,T3H04/06/2021
1 en MBB-BK117 D-312/14/2021
Alert Telexes: AS/SA 330
NameRevisionLangSubjectDate
en Main Rotor - Tail Rotor - Intermediate Gearbox - Correction of Operating Hours08/13/2002
Alert Telexes: AS/SA 332
NameRevisionLangSubjectDate
2 en Time Limits - MGB - Bevel Gear Check02/03/2003
1 en Electrical Multi-Purpose Air Intake (MPAI) - Risk of Non-Inflation of Bullet Seal04/10/2002
4 en Fuselage - Check on Frame 529507/11/2001
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours08/13/2002
en Engine Fuel and Control - Fuel Governor - Abnormally Affecting Engine Fuel Flow Limit Adjustment10/02/2002
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 Failure07/08/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours08/13/2002
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 Failure07/08/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours08/13/2002
Alert Telexes: AS/SA 350
NameRevisionLangSubjectDate
en Limitations - Tail Rotor Hub Pitch Change Plate Bearing02/22/2001
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 Rail05/16/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours08/13/2002
en Limitations - "TRW SAMM" Main Servocontrols04/29/2002
Alert Telexes: AS/SA 355
NameRevisionLangSubjectDate
en Limitations - Main Servo Controls11/15/2001
en Limitations - Tail Rotor Hub Pitch Change Plate Bearing02/22/2001
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 Rail05/16/2002
en Rotor Drives - MGB Lubrication Pump06/06/2002
1 en Rotor Drives - MGB Lubrication Pump11/27/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours08/13/2002
1 en Main Rotor Drive - Main Gearbox Free-Wheel12/19/2003
2 en Main Rotor Drive - Main Gearbox Free-Wheel02/04/2004
en Limitations - "TRW SAMM" Main Servocontrols04/29/2002
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 Plate02/05/2004
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 Hoses01/14/2003
en Main Landing Gears Wheel Brake Hydraulic Hose Bursting07/31/2002
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours08/13/2002
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours08/13/2002
en Limitations - "TRW SAMM" Main Servocontrols04/29/2002
Alert Telexes: AS/SA 366
NameRevisionLangSubjectDate
en Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Base Plate02/05/2004
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
en Fuel - Air Vent Hoses01/14/2003
en Limitations - "TRW SAMM" Main Servocontrols04/29/2002
Alert Telexes: AS/SA 532
NameRevisionLangSubjectDate
2 en Time Limits - MGB - Bevel Gear Check02/03/2003
1 en Electrical Multi-Purpose Air Intake (MPAI) - Risk of Non-Inflation of Bullet Seal04/10/2002
4 en Fuselage - Check on Frame 529507/11/2001
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours08/13/2002
en Engine Fuel and Control - Fuel Governor - Abnormally Affecting Engine Fuel Flow Limit Adjustment10/02/2002
Alert Telexes: AS/SA 550
NameRevisionLangSubjectDate
en Limitations - Tail Rotor Hub Pitch Change Plate Bearing02/22/2001
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 Rail05/16/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours08/13/2002
Alert Telexes: AS/SA 555
NameRevisionLangSubjectDate
en Limitations - Tail Rotor Hub Pitch Change Plate Bearing02/22/2001
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 Rail05/16/2002
en Rotor Drives - MGB Lubrication Pump06/06/2002
1 en Rotor Drives - MGB Lubrication Pump11/27/2002
en Main Rotor - Tail Rotor Drive - Correction of Operating Hours08/13/2002
1 en Main Rotor Drive - Main Gearbox Free-Wheel12/19/2003
2 en Main Rotor Drive - Main Gearbox Free-Wheel02/04/2004
en Limitations - "TRW SAMM" Main Servocontrols04/29/2002
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 Plate02/05/2004
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
en Fuel - Air Vent Hoses01/14/2003
en Main Landing Gears Wheel Brake Hydraulic Hose Bursting07/31/2002
en Main Rotor - Main Rotor Drive - Tail Rotor Drive - Correction of Operating Hours08/13/2002
en Limitations - "TRW SAMM" Main Servocontrols04/29/2002
Alert Telexes: EC120
NameRevisionLangSubjectDate
1 en Tail Rotor Drive - Tail Rotor Drive Shaft Damper01/27/2004
en Rotor Flight Control - Limited Cyclic Pitch Control Stick Travel07/08/2002
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 Assembly06/30/2005
en Electrical Power - Battery Overheat Sensing Circuit Wiring12/20/2005
en Limitations - "TRW SAMM" Main Servocontrols04/29/2002
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 Attachment11/03/2003
en Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Base Plate02/05/2004
en Time Limits - Maintenance Checks - Check of MGB Plant Gear Carrier12/16/2004
1 en Indicating and Recording Systems - Landing Gear Extension Inoperative09/19/2002
en Main Landing Gears Wheel Brake Hydraulic Hose Bursting07/31/2002
en Doors - Check and Adjustment of Doors03/11/2002
1 en Doors - Cabin Sliding Door09/24/2003
Flight Manuals
NameRevisionLangSubjectDate
5 en BO 105 C/CS03/12/2010
5 en BO105 CB/CBS03/12/2010
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-309/22/2006
17 en MBB-BK117 A-411/26/2015
17 en MBB-BK117 A-409/22/2006
21 en MBB-BK117 B-1 and MBB-BK117 B-1D11/26/2015
21 en MBB-BK117 B-1 and MBB-BK117 B-1D09/22/2006
22 en MBB-BK117 B-2 and MBB-BK117 B-2D11/26/2015
22 en MBB-BK117 B-2 and MBB-BK117 B-2D09/22/2006
31 en MBB-BK117 C-1 and MBB-BK117 C-1D11/26/2015
31 en MBB-BK117 C-1 and MBB-BK117 C-1D09/22/2006
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)03/28/2017
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 EC13007/03/2022
16, Up2 en EC13007/03/2022
6 en AS 350 B109/28/2020
13 en AS 350 B204/05/2021
13 en AS 350 B304/05/2021
6 en AS 350 BA09/28/2020
6 en AS 350 D09/28/2020
31 en BO 10512/15/2020
7 en BO 105 LS A-311/27/2018
4 en BO 105 LS A-3 Superlifter03/28/2019
12 en EC 130 B404/05/2021
10 en EC 130 T204/05/2021
en EC13508/01/2008
Safety Notices
NameRevisionLangSubjectDate
1 en Stabilizers - Fins - Failure of Spar of Upper Vertical Fin04/21/2011
Service Bulletins: AS/SA 313
NameRevisionLangSubjectDate
en Limitations: Main Gearbox A, Frames. Allocating a Service Life Limit to Repair Eye End-Fittings06/08/1983
en Mandatory Inspection of Tail Rotor Pitch Change Control Rod05/02/1984
en Alert Rotor Drive - Bevel Gear Check07/18/2001
en Mandatory Time Limits - Check of Free Wheel Lubrication02/14/1979
1 en Mandatory Time Limits - Main Rotor Blade Root Skin and Reinforcement Strip Bonding Check09/28/1998
Iss 2 en Mandatory Rotors - Improvement of Sealing for Free Wheel and MGP/Free Wheel/Clutch Unit Coupling02/14/1979
en Mandatory Alert Rotors - Free-Wheel Assembly - Check of Free-Wheel Cage03/23/2011
Service Bulletins: AS/SA 3130
NameRevisionLangSubjectDate
2 en Mandatory Stabilizers - Reinforcement of Spar04/25/1997
Service Bulletins: AS/SA 315
NameRevisionLangSubjectDate
en Alert Rotor Drive - Bevel Gear Check07/18/2001
1 en Mandatory Time Limits - Main Rotor Blade Root Skin and Reinforcement Strip Bonding Check09/28/1998
en Alert Time Limits - Check of Lower Pinion-to-MGB Vertical Shaft Bevel Gear Housing Coupling Splines08/07/2001
en Mandatory Alert Time Limits - Maintenance Checks - Oxygen Cylinders08/16/2006
3 en Mandatory Stabilizers - Reinforcement of Spar04/25/1997
en Mandatory Alert Rotors - Free-Wheel Assembly - Check of Free-Wheel Cage03/23/2011
Service Bulletins: AS/SA 316
NameRevisionLangSubjectDate
1 en Main Gearbox "A" Frames05/30/1985
en Alert Rotor Drive - Bevel Gear Check07/18/2001
en Time Limits - Check of Free Wheel Lubrication02/14/1979
3 en Mandatory Time Limits - Inspection of AU4 G1 Inflating Head Installed on Emergency Flotation Gear Nitrogen Cylinder05/04/1998
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 Check09/28/1998
en Alert Time Limits - Check of Lower Pinion-to-MGB Vertical Shaft Bevel Gear Housing Coupling Splines08/01/2001
Iss 2 en Mandatory Rotors: Improvement of Sealing on Freewheel and MGB/Freewheel/Clutch Unit Couplings02/14/1979
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 Cage03/23/2011
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 Check07/18/2001
en Time Limits - Check of Free Wheel Lubrication02/14/1979
1 en Mandatory Time Limits - Main Rotor Blade Root Skin and Reinforcement Strip Bonding Check09/28/1998
en Alert Time Limits - Check of Lower Pinion-to-MGB Vertical Shaft Bevel Gear Housing Coupling Splines08/01/2001
Iss 2 en Mandatory Rotors: Improvement of Sealing on Freewheel and MGB/Freewheel/Clutch Unit Couplings02/14/1979
en Mandatory Alert Rotors - Free-Wheel Assembly - Check of Free-Wheel Cage03/23/2011
Service Bulletins: AS/SA 3180
NameRevisionLangSubjectDate
2 en Mandatory Stabilizers - Reinforcement of Spar04/25/1997
Service Bulletins: AS/SA 319
NameRevisionLangSubjectDate
1 en Main Gearbox "A" Frames05/30/1985
en Alert Rotor Drive - Bevel Gear Check07/18/2001
en Time Limits - Check of Free Wheel Lubrication02/14/1979
3 en Mandatory Time Limits - Inspection of AU4 G1 Inflating Head Installed on Emergency Flotation Gear Nitrogen Cylinder05/04/1998
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 Check09/28/1998
en Alert Time Limits - Check of Lower Pinion-to-MGB Vertical Shaft Bevel Gear Housing Coupling Splines08/01/2001
Iss 2 en Mandatory Rotors - Improvement of Sealing on Freewheel and MGB/Freewheel/Clutch Unit Couplings02/14/1979
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 Cage03/23/2011
Service Bulletins: AS/SA 330
NameRevisionLangSubjectDate
1 en Mandatory Limitations - Tail Rotor Pitch Change Spider Check02/14/1996
1 en Mandatory Limitations - Separation of Grounds for Transformer-Rectifiers with or without Shunts03/13/1997
en Alert Limitations - Fittings & Mounts - Periodic Replacement of Main Gear Box RH Rear Fitting & Attachment Screws06/23/2021
3 en Mandatory Time Limits - Inspection of AU4 G1 Inflating Head Installed on Emergency Flotation Gear Nitrogen Cylinder05/04/1998
4 en Mandatory Monitoring of Metal Tail Rotor Blades12/18/1990
2 en Alert Time Limits - Tail Rotor Pitch Change Rod Bearing Check01/18/2001
1 en Alert Time Limits - Checking TGB for Angular Play01/11/2001
en Alert Time Limits - Tail Rotor Blade De-Icing Rotating Collector06/08/2001
en Main Rotor Drive - Readjusting or Checking Tightening Torque Load of Attachment Hardware and Checking Integrity of Main Gear Box Input Flexible Couplings03/03/2008
1 en 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 Rotors - MGB Oil Cooling Fan - Checking Clearance between a Fan Blade and Guide Vane Bearing Housing07/12/2010
1 en Rotors - MGB Oil Cooling Fan - Checking Clearance between a Fan Blade and Guide Vane Bearing Housing07/24/2020
2 en Emergency ROTORS - MGB Oil Cooling Fan - Checking Clearance between a Fan Blade & Guide Vane Bearing Housing07/25/2022
1 en Alert Limits - Maintenance Checks - Check of Tail Rotor Control Turnbuckle06/05/2013
en Time Limits - Maintenance Checks - Tail Rotor - Inspection of Skin of Metal Tail Rotor Blades03/21/2016
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 Detector10/04/2021
en Alert Time Limits - Maintenance Checks - Rotors - Check of Chip Detectors of Main Rotor Hub05/27/2019
en Alert Time Limits - Maintenance Checks - Tail Rotor - Replacement of Flapping Hinge of Tail Rotor Blades04/08/2020
3 en Equipment and Furnishings - Hydraulic Hoist - Jamming of Cable on Structure07/06/2011
1 en Ice and Rain Protection - Installation of a Blanking Cover on Multi-Purpose Air Intake02/03/2000
en Ice and Rain Protection - Heat-Insulation of Double P2-Air System for Multi-Purpose Air Intakes02/03/2000
1 en Alert Ice and Rain Protection - Check of Main Rotor Blade De-Icing System Distributor Retaining Clamp and Attachment Screw08/21/2008
en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/03/2014
1 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door03/11/2020
en Alert Doors - Side Stairway Door - VIP Door Locking Improvement03/11/2020
en Alert Fuselage - Primary Structure - Check of Suspension Bars Attachment Plates04/03/2023
1 en Mandatory Cowlings - Inclined Drive Shaft Fairing Hinge Pin Stop on Tail Boom02/27/1996
en Alert Windows - Rear Hatch Emergency Exit - Check of Press-Stud on Rear Hatch Emergency Exit Jettisoning System08/10/2015
3 en Mandatory Tail Rotor Drive - Improvement in Attachment of Bonding Braids on TRH02/18/1991
en Rotors - MGB Oil Cooling Fan - New Bearings of Fan Bearing Rotor06/25/2018
en Alert Main Gear Box (MGB) - Particle Detector - Replacement of Particle Detector04/04/2019
en Alert Rotors - Oil Cooling - Increased Reliability of Fan-Bearing Assembly & Flexible Duct07/25/2022
en Alert Rotors - Main Gearbox - Replacement of Second Stage Planet Gear Assemblies10/04/2021
en Alert Rotors - Main Gear Box - Check Correct Assembly of Flange Assembly Coupling06/30/2022
1 en Rotor Flight Controls - Servo-Controls - Crimping of End-Fitting Ball Joints12/05/2012
en Alert Rotor Flight Controls - Main Rotor Controls - Improvement of Protection of Stop Support of Collective Levers02/22/2022
1 en Mandatory Alert Engine Controls - Fuel Shut-Off Control Lever - Tangential Gearbox Jamming03/22/2007
en Rotors - Check of Internal Diameter of Bush Retainings09/29/2023
Service Bulletins: AS/SA 332
NameRevisionLangSubjectDate
1 en Mandatory Limitations - Tail Rotor Pitch Change Spider Check02/14/1996
en Mandatory Limitations - Spindles and Flapping Hinge Pins03/26/1996
1 en Mandatory Limitations - Check of Intermediate Gear Box Front Support09/10/1997
en Mandatory Limitations - Single-Pole Circuit Breaker Checks06/30/1997
en Mandatory Limitations - Pilot's and Copilot's Door08/05/1997
1 en Alert Limitations - Check of Bay-Pass Valve Closing on Fuel Filters03/15/2001
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 Flight04/15/2008
en Mandatory Alert Limitations - Hydraulic Pump08/23/2007
en Limitations - Sling - Longitudinal Beams Y35003/19/2012
en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Any Seat"08/26/2014
1 en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Any Seat"08/09/2017
1 en Limitations- Fittings and Mounts - Periodic Replacement of Fittings and Attachment Components of Main Gearbox (MGB) Suspension Bars08/25/2017
1 en Limitations - Lateral Sliding Plug Doors - Prohibition Against Jettisoning of RH Lateral Sliding Plug Door for Helicopters Equipped with Hoist Arm06/28/2018
1 en Limitations - 12 Hz Vibratory Phenomenon on Specific Helicopter Configuration12/04/2019
1 en Alert Limitations - MGB Free Wheel Shaft - Free Wheel Shaft of Main Gear Box (MGB)07/29/2020
en Limitations - 12 Hz Vibratory Phenomenon on Specific Helicopter Configuration12/04/2019
en MGB Epicyclic Module Upper Casing Bearing Attachment Bolts12/21/1994
4 en Mandatory Time Limits - Shorter Time Limit for Main Rotor Blade Checks04/06/2000
3 en Alert Time Limits - Checking Bearing on Tail Rotor Pitch-Control Rod01/18/2001
1 en Alert Time Limits - Checking TGB for Angular Play01/11/2001
1 en Mandatory Time Limits/Maintenance Checks - Tail Rotor Blade De-Icing Rotating Collector08/16/1999
en Mandatory Time Limits - Check for Interference between Flexible Mounting Plate and Shims on Transmission Deck07/08/1999
en Alert Time Limits - Check of Non-Rotating Scissors Hinges on Main Rotor Shaft02/01/2001
en Alert Time Limits - Maintenance Checks - Check of Attachment of Front and Rear MGB Suspension Bar Attaching Fittings03/28/2006
en Alert Time Limits - Maintenance Checks - Check of Outer Skin and Butt Strap at Frame 529502/20/2008
2 en Time Limits - Maintenance Checks - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification04/23/2009
3 en Time Limits - Maintenance Checks - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification07/13/2012
1 en Alert Time Limits - Maintenance Checks - Check of Tail Rotor Control Turnbuckle06/05/2013
1 en Alert Time Limits - Maintenance Checks - Visual Check of Splicing of Frame X529502/09/2021
1 en Alert Time Limit - Maintenance Checks - Yaw Control - Check of Yaw Damper Support02/10/2021
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 Pins06/26/2018
1 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System02/08/2018
2 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System04/10/2019
3 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System02/10/2020
4 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System09/23/2020
2 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 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters10/07/2016
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 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters02/25/2017
4 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 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters03/17/2017
5 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 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters06/23/2017
6 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 53049 Helicopters; Check of MGB Oil Cooler & Oil Filter for Pre Mod 07 53049 Helicopters07/27/2017
1 en Alert Time Limits - Maintenance Checks - Main Rotor Drive - Check of MGB Particle Detectors & Flight Ban of 2nd Stage Type A Planet Gears02/03/2020
en Alert Time Limits - Maintenance Checks - Replacement of Flapping Hinge of Tail Rotor Blades04/08/2020
3 en Equipment and Furnishings - Hydraulic Hoist - Jamming of Cable on Structure07/06/2011
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 Seat08/09/2012
en Equipment and Furnishings - Emergency Floatation Gear - Check of Emergency Floatation Gear Installation09/25/2013
en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under Cabin Seats09/07/2017
en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under 3rd Crew Member Seat09/07/2017
en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under Cockpit Seats09/07/2017
en Alert Equipment and Furnishings - Emergency Flotation Gear - Installation of Flotation Gear Rear Fittings with Spherical Leveling Washers04/04/2018
2 en Alert Equipment and Furnishings - Emergency Flotation Gear - Installation of Flotation Gear Rear Fittings with Spherical Leveling Washers03/21/2019
en Alert Equipment & Furnishings - Emergency Floatation - Check of Front Emergency Floatation Hoses01/07/2020
en Equipment & Furnishings - Hoist System - Check of Hoist Attachments Fitting01/25/2022
en Alert Equipment and Furnishings - Hoist & Accessories - Addition of a Cable Protection on Hoist Shear Toggle Switch08/03/2023
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.A03/15/2001
en Alert Fuel System - Engine Fuel System - Check Bowls of RH & LH Fuel Filters04/25/2023
1 en Alert Ice and Rain Protection - Check of Main Rotor Blade De-Icing System Distributor Retaining Clamp and Attachment Screw08/21/2008
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-Off07/31/2013
en Alert Landing Gear - Solenoid Valve Power Supply Modification07/12/2010
1 en Alert Navigation - Attitude and Heading Reference System (AHRS) - Change of FLIGHT/GROUND Signal Input03/29/2019
en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/03/2014
1 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door08/29/2017
en Alert Doors - Side Stairway Door - Improvement of Locking System08/29/2017
1 en Alert Doors - Side Stairway Door - Improvement of Locking System10/15/2019
2 en Alert Doors - Side Stairway Door - Improvement of Locking System02/25/2020
en Alert Doors - Lateral Sliding Plug Doors - Check of Jettisoning Mechanism of Lateral Sliding Plug Doors01/30/2017
1 en Alert Doors - Lateral Sliding Plug Doors - Check of Jettisoning Mechanism of Lateral Sliding Plug Doors04/11/2019
3 en Alert Doors - Modification of Release System of Lateral Plug Doors12/17/2019
5 en Alert Fuselage - Intermediate Gear Box (IGB) Fairing03/09/2015
1 en Fuselage - Check for Presence of Blind Hole in TGB Attachment Fittings01/04/2008
1 en Alert Fuselage - Removal of Drain Plugs (Blanking Caps) in Fuel Tank Compartments05/28/2019
en Fuselage - Replacement of Intermediate Gear Box (IGB) Fairing - Corresponds to MOD 072681903/09/2015
1 en Alert Structure - Jettisoning System - Functional Check of Emergency Jettisoning System of Sliding Plug Doors06/29/2015
en Alert Fuselage - Upper Structure - Procedure for Replacement of RH & LH Splices under Plates & Brackets of Main Gear Box (MGB) Bars02/09/2021
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 Screws03/02/2020
2 en Alert Fuselage - Inspection of Main Gear Box (MGB) Suspension Bars Attachment Fittings and their Attachment Screws08/19/2021
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 Bars08/19/2021
en Alert Fuselage - Primary Structure - Check of Suspension Bars Attachment Plates03/06/2023
en Mandatory Fuselage - Gutters on Air Intake Stub Frame10/16/1988
en Alert Windows - Jettisonable Windows - Check of Jettisonable Emergency Exit Window Panels08/08/2012
en Alert Windows - Cabin Windows - Check of Press-Studs on Window Jettisoning System07/16/2015
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System02/10/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System09/23/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System09/23/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System09/23/2020
en Alert Windows - Cabin Windows - Improvement to VIP Window Jettisoning02/08/2018
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System04/10/2019
en Mandatory Main Rotor - Changing Vibration Absorber P/N 332A.11.0460.01 to Version P/N 332A.11.0460.02 by Replacing Weight Supports02/13/1997
en Alert Main Rotor - Swashplate Bearing Attachment Screws09/13/2006
en Alert Main Rotor - Main Rotor Hub (MRH) Assembly - Inspection of Lockwasher Position in MRH Assembly05/27/2019
1 en Main Rotor Drive - Epicyclic Module - Replacement of Epicyclic Module Second Stage Planet Gear Assemblies10/07/2016
2 en Main Rotor Drive - Epicyclic Module - Replacement of Epicyclic Module Second Stage Planet Gear Assemblies06/23/2017
en Main Rotor Drive - MGB Lubrication System - Addition of a Magnetic Plug between MGB & Oil Cooler07/27/2017
en Main Rotor Drive - MGB Lubrication System - Installation of a Magnetic Plug on Lubrication System02/03/2020
en Alert Tail Rotor - Maintenance Applicable to TRH Pitch Control Rod Bearing in Event of a Hydraulic Fluid Leak03/07/2005
1 en Alert Tail Rotor - Maintenance Applicable to TRH Pitch Control Rod Bearing in Event of a Hydraulic Fluid Leak01/20/2014
en 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)06/30/2021
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 Failure07/23/2001
en Alert Rotor Flight Control - Replacement of Pilot's and Copilot's Pedal Unit Adjustment Levers06/08/2001
en Alert Rotor Flight Control - Servocontrol Hydraulic Power System - Crack in Adapter of Hydraulic Reservoir01/08/2003
en Mandatory Alert Rotor Flight Controls - Attaching Main Rotor Servo-Controls to Non-Rotating Swash-Plate10/09/2006
en Mandatory Alert Rotor Flight Controls - Return to Conformity of Main Rotor and Tail Rotor Servocontrols02/19/2007
en Rotor Flight Controls - Main Rotor Servocontrols - Swaging of Attachment Ball Joints06/15/2010
1 en Rotor Flight Controls - Servo-Controls - Crimping of End-Fitting Ball Joints12/05/2012
en Rotor Flight Controls - Yaw Controls - Reinforcement of Yaw Damper Support03/02/2020
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 Jamming03/22/2007
en Emergency External Load System - Check of Cable Ball End of Breeze Family Hoists12/12/2024
en Main Rotors - Check of Internal Diameter of Bush Retainings09/29/2023
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 Cylinder05/04/1998
en Mandatory Limitations - TGB Support Tripod. P/Ns: 341A23-1136-OO/-01/-0207/17/1997
en Alert Time Limits - Maintenance Checks - Rotors & Drive Shafts - Check of Flanges of Inclined & Horizontal Drive Shafts on Tail Rotor Transmission05/31/2023
1 en Alert Time Limits - Maintenance Checks - Rotors & Drive Shafts - Check of Flanges of Inclined & Horizontal Drive Shafts on Tail Rotor Transmission07/28/2023
en Mandatory Alert Landing Gear - Skid-Type Landing Gear - Check of Hardness of Rear Cross-Tube03/24/2016
2 en Mandatory Alert Landing Gear - Skid-Type Landing Gear - Check of Hardness of Rear Cross-Tube10/18/2016
en Rotors & Drive Shafts - Tail Rotor - Check of Blade Root of Tail Rotor Blade (TRB)08/04/2022
2 en Rotors & Drive Shafts - Tail Rotor - Check of Blade Root of Tail Rotor Blade (TRB)06/19/2023
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 Cylinder05/04/1998
en Mandatory Limitations - TGB Support Tripod. P/Ns: 341A23-1136-OO/-01/-0207/17/1997
en Alert Time Limits - Maintenance Checks - Rotors & Drive Shafts - Check of Flanges of Inclined & Horizontal Drive Shafts on Tail Rotor Transmission05/31/2023
1 en Alert Time Limits - Maintenance Checks - Rotors & Drive Shafts - Check of Flanges of Inclined & Horizontal Drive Shafts on Tail Rotor Transmission07/28/2023
en Mandatory Alert Landing Gear - Skid-Type Landing Gear - Check of Hardness of Rear Cross-Tube03/24/2016
2 en Mandatory Alert Landing Gear - Skid-Type Landing Gear - Check of Hardness of Rear Cross-Tube10/18/2016
en Rotors & Drive Shafts - Tail Rotor - Check of Blade Root of Tail Rotor Blade (TRB)08/04/2022
2 en Rotors & Drive Shafts - Tail Rotor - Check of Blade Root of Tail Rotor Blade (TRB)06/19/2023
Service Bulletins: AS/SA 350
NameRevisionLangSubjectDate
en Mandatory Limitations: S.E.P. Spherical Thrust Bearings P.N. 704A.33.633.27 or .3007/04/1979
en Limitations - Conversion of AS 350B into AS 350BA Version03/12/1992
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 Lever04/19/2007
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 Engine02/15/2013
2 en Alert Limitation - Fuel System and Check - FADEC - Flight Manual Procedure02/17/2014
en Limitations - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control10/01/2020
1 en Limitations - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control01/06/2021
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 Reduction11/05/1987
1 en Battery Temperature Probe05/13/1991
en Mandatory Main Rotor Mast Equipped with a 4-Contact Point Bearing05/27/1993
en Mandatory Cyclic Pitch Change Control Rod06/26/1994
1 en Possible Malfunction of MGB Oil Pressure Switch04/21/1994
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 Numbers05/26/1997
2 en Mandatory Time Limits - Tail Rotor Hub Pitch Change Spider Bearing Check09/29/1999
en Mandatory Time Limits - Check for Absence of Rotation of Bearing Spacer of Tail Rotor Pitch Change Rotating Plate05/15/2000
en Alert Time Limits - Maintenance Checks - Replacement of Hydraulic Fluid in Cold Weather04/08/2004
en Alert Time Limits - Maintenance Checks - Check of Sliding Door Rear Roller Support Shaft and Rear Fitting07/19/2006
en Alert Time Limits - Maintenance Checks - Cracked Main Servo-Control Tapered Housing02/28/2006
en Mandatory Alert Time Limits - Maintenance Checks - Oxygen Cylinders08/16/2006
en Time Limits - Maintenance Checks - Collective Pitch Lever Locking Stud01/12/2008
en Alert Time Limits - Maintenance Checks - Check for No Play in Tail Rotor Pitch-Change Links12/09/2009
2 en Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)08/13/2013
3 en Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)06/15/2015
1 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever04/23/2010
2 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever03/01/2011
1 en Alert Equipment and Furnishings - Emergency Floatation Gear - Check of Front and Rear Attachment Brackets04/18/2011
en Alert Time Limits - Maintenance Checks - Tail Rotor Control - Checking Locking of Stop Screws of Yaw Flight Controls08/30/2011
en Time Limits - Maintenance Checks - Rear Structure - Check of Rear Frame Reinforcement Angles03/24/2014
2 en Time Limits - Maintenance Checks - Check of Tail Rotor Laminated Half Bearings12/19/2012
1 en Time Limits/Maintenance Checks - Tail Rotor - Tail Rotor Hub (TRH) Pitch Horn - Check of TRH Pitch Horn Condition06/25/2013
1 en Time Limits - Maintenance Checks - Twist Grip - Checking and Ensuring Water-Tightness of Connectors on Microswitches 53Ka, 53Kb and 65K (IDLE / FLIGHT Modes)06/15/2015
3 en Time Limits - Maintenance Checks - Pitch Change Rod - Periodic Check of Tail Rotor Hub (TRH) Pitch Change Rod05/08/2019
1 en Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin07/22/2020
2 en Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin03/04/2021
en Alert Time Limits - Maintenance Checks - Fuselage - Check for Presence of Main Gear Box (MGB) Suspension Bar Attachment Bracket Screw Head07/16/2018
1 en Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Blades11/05/2020
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links02/09/2021
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 Wheel01/25/2023
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection by Tapping of Stainless Steel Leading Edge Protection of Main Rotor Blades12/06/2022
3 en Mandatory Time Limits - Checking Ball Bearings in Tail Rotor Drive Shaft Rear Section Bearing Mountings02/20/1992
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 Operate09/24/2019
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 Gear09/24/2008
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses02/12/2020
en Alert Equipment & Furnishings - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control01/06/2021
en Fuel System Low-Pressure Pump Failure Warning03/07/1990
en Alert Fuel - In-Flight Loss of Fuel Bleed Lever03/04/2004
en Alert Hydraulic Power - Improvement of "Hydraulic Cut Off" Function04/08/2004
en Alert Hydraulic Power - Protection of Forward Servo-Control Hoses07/26/2010
en Hydraulic Power - Main Hydraulic Generation - Check of "Hydraulic Cut-Off" Function ("HYD" Switch on Collective Stick)05/04/2021
1 en Alert Doors - Sliding Doors - Inspection of Upper Rail and Roller of LH and/or RH Sliding Doors07/30/2020
4 en Fuselage - Locking MGB and Engine Cowling03/30/1992
en Fuselage Removing Side Console from Instrument Panel, LH Side09/24/1991
en Alert Fuselage - Replacement of MGB Opening Cowling Seals07/11/2002
en Fuselage - Check of Conformity of Center Cross Member at X 2325 Under Cabin Floor04/11/2007
en Fuselage - MGB Side Cowlings09/23/1981
2 en Alert Stabilizers - Improvement and/or Monitoring of Upper and Lower Fin Attachments02/28/2008
1 en Alert Stabilizers - Improvement of Attachment Strength for Upper and Lower Fin Skids01/05/2009
en Alert Main Rotor - Swashplates - Check of Rotating Star04/28/2014
en Alert Main Rotor - Main Rotor Hub - Check of Main Rotor Hub / Mast Attachment Screws02/15/2017
en Alert Main Rotor - Main Rotor Mast - Check of Bearing Retaining Rings of Main Rotor Mast09/17/2018
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 Indicator05/17/2016
2 en Alert Tail Rotor - Improving Tail Rotor Blade Trailing Edge Tab Security02/15/2007
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 Assembly05/18/2011
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 Gearbox08/13/1979
en Mandatory Rotors - Wear Telltale Washers for Laminated Bearing on Tail Rotor Hub11/06/1979
en Mandatory Flying Controls - Servo - Controls10/09/1989
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls02/19/2007
3 en Alert Rotor Flight Controls - Modification to Electrical Operation of Twist Grip for Arriel 2B Engines06/16/2016
en Rotor Flight Controls - Single Hydraulic Main and Tail Servo-Controls04/15/2013
en Rotor Flight Controls - Double Hydraulic Servocontrols - "HYDR" Test Indication for Double Hydraulic Servocontrols02/25/2015
en Rotor Flight Controls - Dual Hydraulic System - Replacement of "ACCU TST" Button08/25/2016
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 Rod03/11/2019
en Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod07/25/2019
en Rotor Flight Control - General - Inspection for Conformity of Flexballs04/29/2022
en Alert Power Plant - Interference between Bleed Valve Air Exhaust Duct and Engine Fuel Line05/12/2003
2 en Power Plant - Ariel Engine Flushing Installation10/02/1990
en Engine Indicating (ASU No 2) PCB SE 03022 - Resistor R8 Not Installed03/27/2000
1 en Mandatory Oil - Engine Lubricating System - Protection of Pipe Between Engine and MGB Compartments05/05/2000
en Mandatory Inspection of Air Cruisers Emergency Floatation System05/22/1981
en Mandatory Inspection of Air Cruisers Emergency Flotation Electrical Harness and Modification to Harness04/04/1983
en Equipment & Furnishings - Litter Kit - Modification of Bead Chain Tether Attachment Location03/24/2017
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 Section02/09/2006
1 en Alert Limitations - Starter Generator Limitations09/14/2006
1 en Mandatory Alert Limitations - Main Rotor Servo-Controls and Tail Rotor Servo-Controls - Return to Conformity of Bearing of Servo-Control Input Lever04/19/2007
en Limitations - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control10/01/2020
1 en Limitations - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control01/06/2021
en Behavior on Ground with Rotor Turning08/21/1986
en Mandatory Limitations - Cyclic Pitch Change Control Rod06/26/1994
1 en Mandatory Possible Malfunction of MGB Oil Pressure Switch04/21/1994
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 Numbers05/26/1997
en Mandatory Time Limits - Tail Rotor Hub Pitch Change Spider Bearing Check02/08/1999
2 en Mandatory Time Limits - Tail Rotor Hub Pitch Change Spider Bearing Check09/29/1999
en Mandatory Time Limits - Check for Absence of Rotation of Bearing Spacer of Tail Rotor Pitch Change Rotating Plate05/15/2000
en Mandatory Alert Time Limits/Maintenance Checks - MGB - Lubrication Pumps11/16/2004
1 en Mandatory Alert Time Limits/Maintenance Checks - MGB - Lubrication Pumps01/05/2006
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 Weather04/08/2004
en Alert Time Limits - Maintenance Checks - Check of Sliding Door Rear Roller Support Shaft and Rear Fitting07/19/2006
en Alert Time Limits - Maintenance Checks - Cracked Main Servo-Control Tapered Housing02/28/2006
en Alert Time Limits - Maintenance Checks - Monitoring of MGB Oil Pump07/09/2007
1 en Alert Time Limits - Maintenance Checks - Monitoring of MGB Oil Pump07/29/2015
en Alert Time Limits - Maintenance Checks - Check for No Play in Tail Rotor Pitch-Change Links12/09/2009
1 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever04/23/2010
2 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever03/01/2011
1 en Alert Equipment and Furnishings - Emergency Floatation Gear - Check of Front and Rear Attachment Brackets04/18/2011
en Alert Time Limits - Maintenance Checks - Tail Rotor Control - Checking Locking of Stop Screws of Yaw Flight Controls08/30/2011
en Time Limits - Maintenance Checks - Rear Structure - Check of Rear Frame Reinforcement Angles03/24/2014
2 en Time Limits - Maintenance Checks - Check of Tail Rotor Laminated Half Bearings12/19/2012
1 en Time Limits/Maintenance Checks - Tail Rotor - Tail Rotor Hub (TRH) Pitch Horn - Check of TRH Pitch Horn Condition06/25/2013
3 en Time Limits - Maintenance Checks - Pitch Change Rod - Periodic Check of Tail Rotor Hub (TRH) Pitch Change Rod05/08/2019
1 en Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin07/22/2020
2 en Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin03/04/2021
en Alert Time Limits - Maintenance Checks - Fuselage - Check for Presence of Main Gear Box (MGB) Suspension Bar Attachment Bracket Screw Head07/16/2018
1 en Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Blades11/05/2020
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links02/09/2021
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 Wheel01/25/2023
en Alert Inspection Schedules - Tail Rotor Drive - Periodic Check & Modification of Fan Supports04/03/2022
1 en Alert Inspection Schedules - Tail Rotor Drive - Periodic Check & Modification of Fan Supports07/20/2022
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection by Tapping of Stainless Steel Leading Edge Protection of Main Rotor Blades12/06/2022
en Mandatory Monitoring Fuselage to Tail Boom Junction
en Mandatory Time Units - MGB Oil Cooler Fan Vibration Level Check02/01/1989
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 Operate05/14/2019
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 Hoses02/12/2020
en Alert Equipment & Furnishings - Cyclic Stick Grip - UP/DOWN Switch for Hoist Control01/06/2021
en Alert Fire Protection - Engine Fire Extinguishing System - Crossed Connection in Distribution System of Engine Fire Extinguishers07/02/2015
en Alert Fuel - Removal of FUELTRON Flowmeter06/06/2013
1 en Alert Doors - Sliding Doors - Inspection of Upper Rail and Roller of LH and/or RH Sliding Doors07/30/2020
en Fuselage - Check of Conformity of Center Cross Member at X 2325 Under Cabin Floor04/11/2007
en Fuselage - Improvement to Engine and MGB Cowling Locking10/09/2008
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 Attachments02/28/2008
1 en Alert Stabilizers - Improvement of Attachment Strength for Upper and Lower Fin Skids01/05/2009
en Alert Main Rotor - Swashplates - Check of Rotating Star04/28/2014
en Alert Main Rotor - Main Rotor Hub - Check of Main Rotor Hub / Mast Attachment Screws02/15/2017
en Alert Main Rotor - Main Rotor Mast - Check of Bearing Retaining Rings of Main Rotor Mast09/17/2018
en Main Rotor Drive - New MGB Base Bidirectional Crossbeam04/07/1997
1 en Main Rotor Drive - New Distribution of Oil Flow between Combiner Gearbox and MGB07/29/2015
2 en Main Rotor Drive - New Distribution of Oil Flow between Combiner Gearbox and MGB06/22/2017
2 en Alert Tail Rotor - Improving Tail Rotor Blade Trailing Edge Tab Security02/15/2007
en Alert Rotor Flight Controls - Tail Gearbox - Check of Tail Gearbox (TGB) Casing Assembly05/18/2011
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls02/19/2007
1 en Alert Rotor Flight Controls - Load Compensator Lever04/27/2007
en Rotor Flight Controls - Single Hydraulic Main and Tail Servo-Controls04/15/2013
1 en Alert Rotor Flight Controls - Tail Rotor Flight Controls - Check of TGB Actuating Rod03/11/2019
en Alert Rotor Flight Controls - Collective Controls - Replacement of Release Control Protective Cover on Pilot Collective Stick01/12/2021
en Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod07/25/2019
en Rotor Flight Control - General - Inspection for Conformity of Flexballs04/29/2022
en Mandatory Flying Controls - Servo-Controls04/18/1990
1 en Alert Power Plant - Addition of a Label on Instrument Panel11/10/2020
2 en Starting - Automatic Relighting of Allison 250C 20F Engines07/08/1987
en Equipment & Furnishings - Litter Kit - Modification of Bead Chain Tether Attachment Location03/24/2017
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 Plate02/17/2005
en Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)05/07/2008
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 Rod07/04/2002
en Alert Limitations - Tail Rotor Blade Pitch-Control Shafts P/N 365A33.6161.20 or 21 (Pre-MOD 0765B41 Aluminum Control Shafts)06/21/2007
1 en Limitations - Limited Fuel Transfer between Fuel Tank Groups05/13/2009
en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"08/26/2014
1 en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"02/12/2019
5 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)03/25/2020
6 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)06/14/2021
3 en Limitations - Tail Gear Box (TGB) P/Ns 365A33-6005-09 and 365A33-6005-1006/14/2021
en Mandatory Limitations - Single-Pole Circuit Breakers Check12/11/1997
en Mandatory Doors - Forward Passenger Door Jettision System01/31/1994
en Alert Time Limits - Tail Rotor Blade Monitoring and Limitations04/16/2003
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 Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends08/18/2008
4 en 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 Bearing02/15/2006
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 Plug08/25/2006
1 en Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame03/31/2010
2 en Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame04/07/2014
2 en Mandatory Alert Time Limits - Maintenance Checks - Tail Rotor Hub (TRH) - Visual Check of 10-Blade and 11-Blade TRH Hubs10/09/2012
1 en Time Limits - Maintenance Checks - Inspection of 9° Frame in Area of Latch Support and Stretcher Support06/18/2012
2 en 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 Footsteps09/01/2014
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 Skin07/21/2017
1 en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin03/27/2019
3 en Alert Main Rotor Drive - Main Gear Box (MGB) - Periodic Check of MGB Magnetic Plugs & Replacement of MGB Planet Gears03/02/2018
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links02/09/2021
en Alert Time Limits - Maintenance Checks - Tail Rotor Drive - Tail Gear Box (TGB) MP/N 365A33-5000-0002/07/2022
en Alert Time Limits - Maintenance Checks - Check of Main Gearbox (MGB) Bottom Plate02/17/2005
3 en Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends08/18/2008
4 en 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 Links02/09/2021
en Alert Time Limits - Maintenance Checks - Tail Rotor Drive - Tail Gear Box (TGB) MP/N 365A33-4000-00/01/02 and 365A33-5000-0002/07/2022
2 en Mandatory Alert Placards and Markings - Basic and Optional Marking Change - Corresponds to MODs 0711B67 and 0711B6804/23/2015
1 en Alert Auto Flight - Tail Rotor Flight Controls - Check of Position of Yaw Harness Compared to Tail Gear Box (TGB) Fairing06/27/2023
1 en Alert Equipment and Furnishings - Pilot and Co-Pilot Seats - Inspection of Rear Beam of Seat08/09/2012
1 en Mandatory Alert Equipment and Furnishings - Life Raft Installation - Improved External Life Raft Deployment Controls - Corresponds to Modification 365A084711.0002/02/2015
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 Battery02/05/2016
en Alert Equipment and Furnishings - Label "Do Not Stow Anything under Any Seat"02/12/2019
en Alert Equipment & Furnishings - Emergency Floatation - Check of Front Emergency Floatation Hoses01/07/2020
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses02/12/2020
en Mandatory Indicating and Recording Systems - MGB Planet Gear Shaft Vibration Level Monitoring Unit06/23/1998
en Alert Landing Gear - Wheel Brake Hydraulic Hose Bursting10/27/2003
1 en Alert Navigation - Reinforced Shelf for GV76-1 Vertical Gyro Units in Cargo07/28/2010
1 en Alert Doors - External Jettisoning of Pilot & Co-Pilot Doors06/04/2021
en Alert Doors - Emergency Exit - Emergency Evacuation Labels for Helicopters Installed with Fixed Parts of FLIR System02/10/2021
1 en Alert Doors - Emergency Exit - Emergency Evacuation Labels for Helicopters Installed with Fixed Parts of FLIR System02/09/2022
1 en Alert Fuselage - Draining Tank Box Area09/21/2011
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 Attachment04/10/2006
en Main Rotor - Frequency Adapter with Ventilation Holes11/23/2006
en Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)05/07/2008
1 en Alert Main Rotor Drive - Tail Rotor Drive Flange - Installation of Aft Output Stop01/31/2019
3 en Main Rotor Drive - Replacement of Epicyclic Reduction Gear on MGB07/26/2018
en Alert Main Rotor Drive - Indicating - Replacement of Electrical Magnetic Plug of Main Gearbox (MGB) Pump Intake with Non-Electrical Magnetic Plug07/11/2018
en Alert Main Rotor Drive - Indicating - Upgrade of Non-Electrical Magnetic Plug at Pump Intake of Main Gearbox (MGB)07/11/2018
en Alert Main Rotor Drive - Tail Rotor Drive Flange - Installation of Rear Output Stop07/22/2020
en Main Rotor Drive - Main Gear Box (MGB) - Removal of MGB to Replace MGB Housing02/19/2020
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 Replacement03/21/2011
en Tail Rotor Drive - Tail Gear Box (TGB) - Checking there is No Oil Retention in Recess of TGB Housing07/10/2019
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 Attachment04/10/2006
en Main Rotor - Frequency Adapter with Ventilation Holes11/23/2006
en Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)05/07/2008
1 en Alert Rotors - Tail Rotor Drive Flange - Installation of Rear Output Stop07/22/2020
en Alert Tail Rotor Drive - Main Gear Box - Upgrade of Non-Electrical Magnetic Plug at Pump Intake of MGB05/28/2020
1 en Alert Rotor Flight Controls - Check of Collective Pitch Lever Restraining Tab02/25/2009
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls02/19/2007
en Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod07/25/2019
en Power Plant FADEC - Software Modification10/17/2000
en Mandatory Power Plant - Checking RH and LH Sand Filter Ejection Nozzles for Cracks02/21/2000
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)03/25/2020
3 en Limitations - Tail Gear Box (TGB) P/Ns 365A33-6005-09 and 365A33-6005-1006/14/2021
3 en Mandatory Time Limits - Blades - Checking Kevlar Tie-Bar11/14/1996
4 en Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends11/20/2014
3 en Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends08/18/2008
en Alert Tail Rotor - Tail Rotor Pitch Control Rod Double Bearing02/15/2006
1 en Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame03/31/2010
2 en Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame04/07/2014
en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin07/21/2017
1 en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin03/27/2019
en Mandatory Indicating and Recording Systems - MGB Planet Gear Shaft Vibration Level Monitoring Unit06/23/1998
1 en Alert Fuselage - Draining Tank Box Area09/21/2011
en Main Rotor - Frequency Adapter with Ventilation Holes11/23/2006
en Main Rotor Drive - Main Gear Box (MGB) - Removal of MGB to Replace MGB Housing02/19/2020
en Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)05/07/2008
1 en Rotors - TGB Control Shaft Guide Bush Replacement03/21/2011
en Tail Rotor Drive - Tail Gear Box (TGB) - Checking there is No Oil Retention in Recess of TGB Housing07/10/2019
1 en Alert Rotor Flight Controls - Check of Collective Pitch Lever Restraining Tab02/25/2009
en Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod07/25/2019
Service Bulletins: AS/SA 532
NameRevisionLangSubjectDate
en Mandatory Alert Limitations - Hydraulic Pump08/23/2007
1 en Limitations - Lateral Sliding Plug Doors - Prohibition Against Jettisoning of RH Lateral Sliding Plug Door for Helicopters Equipped with Hoist Arm06/28/2018
en Limitations - Sling - Longitudinal Beams Y35003/19/2012
en Mandatory Alert Time Limits - Maintenance Checks - Oxygen Cylinders08/16/2006
2 en Time Limits - Maintenance Checks - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification04/23/2009
3 en Time Limits - Maintenance Checks - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification07/13/2012
3 en Equipment and Furnishings - Hydraulic Hoist - Jamming of Cable on Structure07/06/2011
en Alert Equipment and Furnishings - Interference between Pilot's and Copilot's Seat Straps and Bulkhead X171510/19/2009
en Equipment and Furnishings - Emergency Floatation Gear - Check of Emergency Floatation Gear Installation09/25/2013
en Equipment & Furnishings - Hoist System - Check of Hoist Attachments Fitting01/25/2022
1 en Alert Ice and Rain Protection - Check of Main Rotor Blade De-Icing System Distributor Retaining Clamp and Attachment Screw08/21/2008
en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/03/2014
1 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door08/29/2017
5 en Alert Fuselage - Intermediate Gear Box (IGB) Fairing03/09/2015
1 en Fuselage - Check for Presence of Blind Hole in TGB Attachment Fittings01/04/2008
en 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-Plate10/09/2006
en Rotor Flight Controls - Main Rotor Servocontrols - Swaging of Attachment Ball Joints06/15/2010
1 en Rotor Flight Controls - Servo-Controls - Crimping of End-Fitting Ball Joints12/05/2012
1 en Mandatory Alert Engine Controls - Fuel Shut-Off Control Lever - Tangential Gearbox Jamming03/22/2007
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 Lever04/19/2007
en Alert Time Limits - Maintenance Checks - Cracked Main Servo-Control Tapered Housing02/28/2006
en Time Limits - Maintenance Checks - Collective Pitch Lever Locking Stud01/12/2008
1 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever04/23/2010
2 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever02/28/2011
1 en Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)08/13/2013
2 en Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)06/15/2015
en Time Limits - Maintenance Checks - Rear Structure - Check of Rear Frame Reinforcement Angles03/24/2014
2 en Time Limits - Maintenance Checks - Check of Tail Rotor Laminated Half Bearings12/19/2012
1 en Time Limits/Maintenance Checks - Tail Rotor - Tail Rotor Hub (TRH) Pitch Horn - Check of TRH Pitch Horn Condition06/25/2013
1 en Time Limits - Maintenance Checks - Twist Grip - Checking and Ensuring Water-Tightness of Connectors on Microswitches 53Ka, 53Kb and 65K (IDLE / FLIGHT Modes)06/15/2015
3 en Time Limits - Maintenance Checks - Pitch Change Rod - Periodic Check of Tail Rotor Hub (TRH) Pitch Change Rod05/08/2019
1 en Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin07/22/2020
2 en Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin03/04/2021
1 en Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Blades11/05/2020
en Fuselage - Check of Conformity of Center Cross Member at X 2325 Under Cabin Floor04/11/2007
en Rotor Flight Controls - Single Hydraulic Main and Tail Servo-Controls04/15/2013
en Rotor Flight Control - General - Inspection for Conformity of Flexballs04/29/2022
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 Lever04/19/2007
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 Lever04/23/2010
2 en Mandatory Alert Time Limits/Maintenance Checks - Periodic Inspection of Tail Gear Box (TGB) Control Lever02/28/2011
en Time Limits - Maintenance Checks - Rear Structure - Check of Rear Frame Reinforcement Angles03/24/2014
2 en Time Limits - Maintenance Checks - Check of Tail Rotor Laminated Half Bearings12/19/2012
1 en Time Limits/Maintenance Checks - Tail Rotor - Tail Rotor Hub (TRH) Pitch Horn - Check of TRH Pitch Horn Condition06/25/2013
3 en Time Limits - Maintenance Checks - Pitch Change Rod - Periodic Check of Tail Rotor Hub (TRH) Pitch Change Rod05/08/2019
1 en Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin07/22/2020
2 en Time Limits - Maintenance Checks - Upper Fin - Inspection of Spar & Attachment Screws of Upper Fin03/04/2021
1 en Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Blades11/05/2020
en Fuselage - Check of the Conformity of Center Cross Member at X 2325 Under Cabin Floor04/11/2007
en Rotor Flight Controls - Single Hydraulic Main and Tail Servo-Controls04/15/2013
en Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod07/25/2019
en Rotor Flight Control - General - Inspection for Conformity of Flexballs04/29/2022
Service Bulletins: AS/SA 565
NameRevisionLangSubjectDate
3 en Limitations - Tail Gear Box (TGB) P/Ns. 365A33-6005-09 and 365A33-6005-1006/14/2021
3 en Time Limits - Maintenance Checks - Check of Bushes and Check for Absence of Delamination on Starflex Star Arm Ends08/18/2008
4 en 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 Bearing02/15/2006
1 en Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame03/31/2010
2 en Time Limits/Maintenance Checks - Check of Lateral Parts of 9° Frame04/07/2014
1 en Time Limits - Maintenance Checks - Inspection of 9° Frame in Area of Latch Support and Stretcher Support06/18/2012
2 en 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 Attachment04/10/2006
en Main Rotor - Frequency Adapter with Ventilation Holes11/23/2006
en Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)05/07/2008
en Tail Rotor Drive - Tail Gear Box (TGB) - Checking there is No Oil Retention in Recess of TGB Housing07/10/2019
en Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod07/25/2019
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)07/16/2001
en Alert Main Transmission - Visual Inspection of Rotor Mast Flange for Cracks08/27/1997
en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap08/11/1999
1 en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap08/31/1999
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 Strap08/23/1999
2 en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion Strap08/31/1999
en Alert Main Rotor System - Implementation of a Calendar Life Limit for Torsion-Tension-Straps 2602559 and 260657606/25/2001
en Alert Lifting System - Main Rotor System - Introduction of a Storage Time for Tension Torsion-Straps12/03/2018
en Alert Tail Rotor - Check of Balance Weights and Control Lever09/23/2008
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 Bellows05/23/2016
5 en Alert Flight Control System - Main Rotor Controls - Removal of Swashplate Bellows07/25/2017
en Main Rotor System - Swashplate - Check of Swashplate01/11/2023
1 en Alert Power Plant - Avoidance of a Determined N2 Speed Range03/03/2010
2 en Alert Optional Equipment - Retrofit of Continuous Ignition System09/13/1993
1 en Alert Optional Equipment - Rescue Hoist - Deactivation of Cable Cutter Function on Control Grip02/02/2015
4 en Alert Starter - Generators - Inspection / Retrofit of a Ground Reference Connection06/21/2010
en Main Rotor System - Swashplate - Check of Swashplate01/11/2023
en Alert Main Transmission - Visual Inspection of Rotor Mast Flange for Cracks09/11/1997
en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion Strap09/01/1999
en Alert Lifting System - Life Limited Parts - Change and Introduction of Life Limits and Reidentification of Life Limited Parts05/11/2005
en Alert Lifting System - Main Rotor System - Introduction of a Storage Time for Tension Torsion-Straps12/03/2018
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/Centering05/08/2009
4 en Alert Flight Control System - Main Rotor Controls - Removal of Swashplate Bellows05/23/2016
5 en Alert Flight Control System - Main Rotor Controls - Removal of Swashplate Bellows07/25/2017
en Main Rotor System - Swashplate - Check of Swashplate01/11/2023
2 en Alert Optional Equipment - Rescue Hoist - Deactivation of Cable Cutter Function on Control Grip01/24/2018
en Main Rotor System - Swashplate - Check of Swashplate01/11/2023
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 Mount07/15/2003
en Limitations - Emergency Floatation Gear Control on Lighting and Ancillary Control Unit (LACU)09/18/2008
en Alert Corrective Measure - Limitations - Tail Rotor Hub - Introduction of a New Part Number and Re-Identification of Equipped Blades of Tail Rotor Hub07/18/2018
en Mandatory Time Limits - Check of Engine-to-MGB Coupling Tube Assembly09/23/1999
en Mandatory Time Limits - Check of Engine-to-MGB Coupling Tube Coupling Assembly07/20/2000
en Alert Time Limits - Maintenance Checks - Emergency Floatation Gears - Periodic Check of Floats with Intervals in Hours06/08/2009
1 en Alert Time Limits - Maintenance Checks - Checks for Crack in Main Rotor Hub02/19/2010
en Alert Time Limits - Maintenance Checks - Main Rotor Hub - Inspection of Rotating & Non-Rotating Scissors Bolts06/11/2019
1 en Alert Time Limits - Maintenance Checks - Main Rotor Hub - Inspection of Rotating & Non-Rotating Scissors Bolts10/05/2020
1 en Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Body11/08/2019
2 en Time Limits - Maintenance Checks - Tail Rotor Hub - Check of Tail Rotor Hub Body02/08/2021
en Electrical Power - Emergency Switch (EMER SW) Wiring04/22/2010
en Alert Equipment and Furnishings - Emergency Floatation Gear - Protector Installation on Rear Bracket and Supply Couplings07/11/2011
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses02/12/2020
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 Support01/25/2013
1 en Alert Doors - Reinforcement of Door Locking/Unlocking Mechanism07/12/2016
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 Bolts08/23/2018
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 Protection07/30/2001
1 en Alert Rotor Flight Controls - New Thrush Washers for Cyclic Stick Friction10/24/2005
en Power Plant - Spring-Type Engine Suspension System05/13/2004
Service Bulletins: EC130
NameRevisionLangSubjectDate
2 en Alert Limitation - Fuel System and Check - FADEC - Flight Manual Procedure02/17/2014
en Alert Limitations - Engine-MGB Coupling Shaft - New Identification & Serialization of Engine-MGB Coupling Shaft07/15/2021
en Alert Time Limits - Maintenance Checks - Emergency Floatation Gears - Periodic Check of Floats with Intervals in Hours06/08/2009
2 en Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)08/13/2013
3 en Engine Controls - Twist Grip - Functional Check and Installation of a Protection for Micro-Contacts 53Ka and 53Kb and 65K (IDLE / FLIGHT Mode)06/15/2015
1 en Time Limits - Maintenance Checks - Twist Grip - Checking and Ensuring Water-Tightness of Connectors on Microswitches 53Ka, 53Kb and 65K (IDLE / FLIGHT Modes)06/15/2015
en Fuselage - Check of Tail Boom / Fenestron Junction Frame06/06/2014
2 en Fuselage - Check of Tail Boom / Fenestron Junction Frame02/20/2015
7 en Fuselage - Check of Tail Boom / Fenestron Junction Frame03/21/2018
en 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 Head07/16/2018
en Alert Time Limits - Maintenance Checks - Tail Rotor - Inspection of Tail Rotor Blades08/10/2020
en Alert Time Limits - Maintenance Checks - Main Rotor - Inspection of Pitch Rod Upper Links02/09/2021
en Time Limits - Maintenance Checks - Aft Fuselage - Visual Inspection of Rear Transmission Bearing Support10/27/2021
1 en 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 Wheel01/25/2023
en Tail Rotor Drive - Tail Rotor Drive Shaft - Balancing Check of Tail Rotor Drive Line12/14/2022
1 en Tail Rotor Drive - Tail Rotor Drive Shaft - Balancing Check of Tail Rotor Drive Line11/02/2023
en Alert Equipment and Furnishings - Emergency Floatation Gear - Protector Installation on Rear Bracket and Supply Couplings07/11/2011
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses02/12/2020
en Alert Fuel - In-Flight Loss of Fuel Bleed Lever03/04/2004
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 Support01/25/2013
1 en Alert Doors - Reinforcement of Door Locking/Unlocking Mechanism07/12/2016
4 en Fuselage - Tail Boom - Patches on EC130 Fenestron / Tail Cone Link04/28/2020
en Alert Fuselage - Air Intake Cowling Attachment Fittings09/11/2003
en Mandatory Alert Fuselage - Containment Box Structure Installation for Cabin Vibration Damper Weights07/19/2006
1 en Fuselage - Check of Tail Boom / Fenestron Junction Frame04/15/2014
en Windows - Center Windscreen Improvement11/16/2010
en Alert Main Rotor - Swashplates - Check of Rotating Star04/28/2014
en Alert Main Rotor - Main Rotor Hub - Check of Main Rotor Hub / Mast Attachment Screws02/15/2017
en Alert Main Rotor - Main Rotor Mast - Check of Bearing Retaining Rings of Main Rotor Mast09/17/2018
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-Controls02/19/2007
\ en Alert Rotor Flight Controls - Collective Pitch Control - Adjustment of Low Pitch Locking on Pilot's Collective Pitch Control02/23/2016
en Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod07/25/2019
en Rotor Flight Control - General - Inspection for Conformity of Flexballs04/29/2022
en Alert Power Plant - Interference between Bleed Valve Air Exhaust Duct and Engine Fuel Line05/12/2003
en Alert Engine Controls - Check of Twist Grip Drive Tube and Control Pinion Attachment02/10/2006
1 en Electrical Harnesses - Interference between Electrical Harnesses and Bottom Structure Fairings04/17/2007
Service Bulletins: EC135
NameRevisionLangSubjectDate
en Alert Air Vehicle General - General Information - Inspection of Additional Titanium Bolts05/04/2020
en Alert Airworthiness Limitations - Tail Rotor - Life Limits for Hub Body09/11/2017
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 Resistor08/02/2000
en Air Conditioning - Mechanical Air Conditioning - Inspection of Compressor Bearing Block06/06/2011
1 en Alert Auto Flight System - Longitudinal, Lateral and Yaw Actuator - Check SEMA/Control Rod for Correct Attachment Hardware01/28/2013
1 en Alert Electrical Power Supply - Direct Current Distribution - Separation of Power Supply Lines05/24/2007
en Alert Equipment/Furnishings - Emergency Equipment - Removal of Strap from Emergency Flashlight05/20/2021
en Alert Equipment / Furnishings - Cockpit Furnishings - IFR-Screens Must Not be Used on Helicopters05/23/2022
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"02/24/1999
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)09/25/2001
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 II09/13/2004
1 en Alert Landing Gear - Emergency Flotation System - Inspection of Flotation Supply Hoses02/12/2020
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 Stator08/08/1997
5 en Alert Inspection of Stator01/18/2006
en Alert Fuselage - Tail Boom - Replacement of Bearing Supports08/14/1998
3 en Alert Fuselage - Tail Boom - Measurement of Vibrations on Tail Rotor Drive Shaft and Replacement of Roller Bearing Attaching Hardware at Bearing Locations09/02/1998
en Alert Fuselage - Tail Boom - Replacement of Attachment Hardware at Bearing Location I of Tail Rotor Drive Shaft with Modified Parts03/23/1999
2 en Alert Fuselage - Tail Boom - Crack Inspection on Connecting Frame Flange and Modification of Bearing Attachment at Bearing Location I07/22/1999
en Alert Fuselage - Cable Channel - Inspection of Wire Harnesses and Modification of Side Channel Covers01/18/2007
1 en Alert Fuselage - Cable Channel - Inspection of Wire Harnesses and Modification of Side Channel Covers06/22/2007
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-Shaft05/05/1999
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 Connection07/01/1999
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 Check06/23/2005
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 Stop03/12/2001
2 en Alert Main Rotor Drive - Torque Strut - Reduction of Life Limit for Torque Strut & Visual Inspection on Torque Struts and on Emergency Stop06/26/2002
4 en Alert Main Rotor Drive - Torque Strut - Reduction of Life Limit for Torque Strut & Visual Inspection on Torque Struts and on Emergency Stop07/07/2003
3 en Alert Main Rotor Drive - Main Transmission - Introduction of an Oil Analysis and Adaption of Measures After Indication of Chip Detector06/16/2008
5 en Alert Main Rotor Drive - Main Transmission - Introduction of an Oil Analysis and Adaption of Measures After Indication of Chip Detector09/06/2011
2 en Alert Main Rotor Drive - Main Transmission - Check of Screws at Lower Hub-Shaft Bearing for Correct Attachment09/12/2008
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 Housing12/05/2016
en Rotor Blades - Inspection of Tail Rotor Blades for Cracks01/25/2024
en Alert Tail Rotor - Tail Rotor Blades - Reduction of Life Time for Specified Tail Rotor Blades08/20/2018
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 Assembly02/04/2021
1 en Rotor Flight Control - Main Rotor Actuator - Inspection of Main Rotor Actuator (Single-Axis Actuators)05/10/2019
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 Device04/14/2008
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 Pivot03/17/2008
4 en Alert Rotor Flight Controls - Tail Rotor Controls - Inspection of Control Rod and Ball Pivot04/03/2017
en Alert Rotor Flight Controls - Tail Rotor, Cyclic and Collective Controls - Check Bearings for Correct Attachment and Retrofit of Bushings and Washers04/28/2008
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 Washer03/30/2017
en Alert Rotor Flight Control - Cyclic Stick - Retrofit of Cyclic Stick Weight Compensation02/07/2018
en Alert Rotor Flight Control - Main Rotor Actuator - One-Time Visual Inspection of Main Rotor Actuator11/28/2018
1 en Rotor Flight Control - Main Rotor Actuator - Check of Main Rotor Actuator (Single-Axis Actuators)04/23/2019
2 en Rotor Flight Control - Main Rotor Actuator - Check of Main Rotor Actuator (Single-Axis Actuators)03/30/2020
en Rotor Flight Control - Tail Rotor Controls - Inspection for Conformity of Flexball04/29/2022
1 en Alert Power Plant EC 135 T1 - Automatic Engine Control - Synchronization Procedure for Fuel Control Components for Sustaining Automatic Engine Control07/20/2000
en Alert Power Plant T1 - Automatic Engine Control & Software Improvement TU19C on EECU (FADEC)08/30/2001
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 Overspeed10/08/2001
en Alert Power Plant EC135 T1 - Automatic Engine Control - Synchronization Procedure for Fuel Control Components for Sustaining Automatic Engine Control08/06/2002
2 en Optional Equipment - External Mounted Hoist System - Inspection of Hoist Boom for Cracks06/23/2010
en Alert Optional Equipment - External Mounted Hoist - Unintended Detachment of Hook Assembly from Cable08/02/2017
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 Bolts05/04/2020
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 Helicopters05/23/2022
1 en Alert Landing Gear - Emergency Flotation System - Inspection of Flotation Supply Hoses02/12/2020
en Alert Tail Rotor - Tail Rotor Blades - Reduction of Life Time for Specified Tail Rotor Blades02/20/2018
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 Assembly02/04/2021
1 en Rotor Flight Control - Main Rotor Actuator - Inspection of Main Rotor Actuator (Single-Axis Actuators)05/10/2019
en Alert Rotor Flight Control - Cyclic Stick - Retrofit of Cyclic Stick Weight Compensation02/07/2018
1 en Alert Rotor Flight Control - Cyclic Stick - Retrofit of Cyclic Stick Weight Compensation02/16/2018
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)03/30/2020
en Rotor Flight Control - Tail Rotor Controls - Inspection for Conformity of Flexball04/29/2022
Service Bulletins: EC155
NameRevisionLangSubjectDate
en Alert Limitations - Tail Rotor Pitch Change Control Rod07/04/2002
1 en Limitations - Limitation Concerning Use of VIP 4-Seat Benches06/24/2009
en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"08/26/2014
1 en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"02/12/2019
5 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)03/25/2020
6 en Alert Limitations - Control Rod Double Bearing - Tail Gearbox (TGB)06/14/2021
3 en Limitations - Tail Gear Box (TGB) P/Ns 365A33-6005-09 and 365A33-6005-1006/14/2021
en Alert Tail Rotor - Tail Rotor Pitch Control Rod Double Bearing02/15/2006
2 en Time Limits - Maintenance Checks - Fittings Attaching Upper Fin on Fenestron12/09/2010
1 en Alert Time Limits - Maintenance Checks - Tail Rotor Hub (TRH) - Visual Check of 10-Blade TRH Hub07/20/2011
1 en Mandatory Alert Time Limits - Maintenance Checks - External Life Rafts Installed in Footsteps09/01/2014
en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin07/21/2017
1 en Mandatory Alert Time Limits - Maintenance Checks - Baggage Compartment - Inspection of Baggage Compartment Skin03/27/2019
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 Gears12/04/2018
en Alert Time Limits - Maintenance Checks - Fan Assembly - Inspection of Fan Hub01/06/2022
1 en Alert Electrical Power - Electrical and Electronic Panels - Protection of Panel 12 Alpha Wiring05/14/2004
en Equipment and Furnishings - Improved Security of Front and Rear 3- to 4-Men VIP Bench Seats06/25/2009
en Mandatory Alert Equipment and Furnishings - Electrical Bonding of Hoist Cut-Off Connector06/01/2007
1 en Alert Equipment and Furnishings - Pilot and Co-Pilot Seats - Inspection of Rear Beam of Seat08/09/2012
1 en Mandatory Alert Equipment and Furnishings - Life Raft Installation Improved External Life Raft Deployment Controls - Corresponds to Modification 365A084711.0102/02/2015
en Alert Equipment and Furnishings - Label "Do Not Stow Anything under Any Seat"02/12/2019
en Alert Equipment & Furnishings - Emergency Floatation - Check of Front Emergency Floatation Hoses01/07/2020
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses02/12/2020
en Alert Indicating and Recording System - Landing Gear Extension Inoperative08/20/2003
en Alert Indicating and Recording System - Modification of Power Supply to Landing Gear PCB 10 and 11 Alpha08/20/2003
1 en Alert Landing Gear - Wheel Brake Hydraulic Hose Bursting06/16/2004
2 en Alert Navigation - Attitude and Heading Reference System (AHRS) - Modification of Wiring of FLIGHT/GROUND Logic (Connector 11 ALPHA)01/30/2018
en Alert Navigation - Attitude and Heading Reference System (AHRS) - Connection Modification on Connector "11 ALPHA" (AHRS)02/19/2018
en Alert Doors - Crew Doors - Functional Test of Crew Door Jettisoning System07/22/2015
en Alert Doors - External Jettisoning of Pilot & Co-Pilot Doors09/30/2020
1 en Alert Fuselage - Draining Tank Box Area09/21/2011
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 System08/10/2015
5 en Main Rotor Drive - Replacement of Epicyclic Reduction Gear on MGB03/06/2019
en Main Rotor Drive - Check of Main Gearbox Casing (to Make Sure that there is No Corrosion in Area of Servo-Control Attachment Fittings)05/07/2008
1 en Alert Main Rotor Drive - Tail Rotor Drive Flange - Installation of Rear Output Stop01/31/2019
en Alert Main Rotor Drive - Indicating - Replacement of Electrical Magnetic Plug of Main Gearbox (MGB) Pump Intake with Non-Electrical Magnetic Plug07/11/2018
en Main Rotor Drive - Main Gear Box (MGB) - Removal of MGB to Replace MGB Housing02/19/2020
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 Replacement03/21/2011
en Tail Rotor Drive - Tail Gear Box (TGB) - Checking there is No Oil Retention in Recess of TGB Housing07/10/2019
1 en Alert Rotor Flight Controls - Check of Collective Pitch Lever Restraining Tab02/25/2009
en Alert Rotor Flight Controls - Return to Conformity of Main Rotor Servo-Controls02/19/2007
en Alert Rotor Flight Controls - Collective Pitch Controls - Replacement of Switch Guard of "Shear" Control on Pilot & Co-Pilot Collective Sticks07/25/2019
en Rotor Flight Controls - Main Rotor Actuators - Check of Link between Lower Ball End Fitting and Actuator Rod07/25/2019
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 Provisions05/07/2003
Service Bulletins: EC175
NameRevisionLangSubjectDate
1 en Alert Equipment & Furnishings - Emergency Floatation System - Inspection of Floatation Balloon Supply Hoses02/12/2020
Service Bulletins: EC225
NameRevisionLangSubjectDate
en Alert Limitations - Prohibits Use of Seats Equipped with Harnesses Fitted with a Belt Buckle Blanking Plug, in Flight04/15/2008
en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"08/26/2014
2 en Mandatory Alert Limitations - Energy-Absorbing Seats - Label "Do Not Stow Anything Under Seat"11/06/2019
1 en Limitations - Fittings and Mounts - Periodic Replacement of Main Gearbox (MGB) Suspension Bar Attachment Pins08/25/2017
1 en Limitations - Lateral Sliding Plug Doors - Prohibition Against Jettisoning of RH Lateral Sliding Plug Door for Helicopters Equipped with Hoist Arm06/28/2018
en Emergency Scheduled/Unscheduled Maintenance - Inspection of MRH Sleeves11/08/2024
1 en Alert Time Limits - Maintenance Checks - Check of Attachment of Front and Rear MGB Suspension Bar Attaching Fittings12/06/2007
2 en Time Limits/Maintenance Checks - Main Rotor Hub - Checking Main Rotor Hub Coning Stop Support Attachment Lugs and Dome Fairing Support Attachment Lugs02/03/2009
1 en Time Limits - Maintenance Checks - Readjustment of Dome Fairing Support-to-Dome Fairing Attachment Screw Tightening Torque02/03/2009
2 en Time Limits - Maintenance Checks - Check of Bonding of Stainless Steel Protective Strip on Leading Edge of Main Rotor Blades04/22/2013
2 en Time Limits - Maintenance Check - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification04/23/2009
3 en Time Limits - Maintenance Check - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification07/13/2012
en Alert Time Limits - Maintenance Checks - Main Rotor Mast Assembly - Inspection of Swashplate Sub-Assembly07/12/2012
1 en Alert Time Limits - Maintenance Checks - Check of Tail Rotor Control Turnbuckle06/05/2013
en Alert Time Limits - Maintenance Checks - Modification of Emergency Spraying System and its Maintenance07/14/2013
1 en Alert Time Limits - Maintenance Checks - Visual Check of Splicing of Frame X529502/09/2021
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 Pins06/26/2018
1 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System02/08/2018
2 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System04/10/2019
3 en Alert Time Limits - Maintenance Checks - Cabin Windows - Improvement to Window Jettisoning System02/10/2020
2 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 Helicopters10/07/2016
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 Helicopters02/25/2017
4 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 Helicopters03/17/2017
5 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 Helicopters06/23/2017
6 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 Helicopters07/25/2017
1 en Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate11/16/2017
2 en Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate02/26/2019
4 en Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate02/28/2022
en Alert Time Limits - Maintenance Check - Main Rotor - Swashplate Assembly - Reduced Inspection Interval Limit for Check of Swashplate Bearing03/31/2020
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 Seat08/09/2012
en Equipment and Furnishings - Emergency Floatation Gear - Check of Emergency Floatation Gear Installation09/25/2013
1 en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under Cabin Seats11/06/2019
en Alert Equipment and Furnishings - Energy-Absorbing Seats - Label Prohibiting Storage under Cockpit Seats09/07/2017
en Alert Equipment and Furnishings - Emergency Flotation Gear - Installation of Flotation Gear Rear Fittings with Spherical Leveling Washers04/04/2018
2 en Alert Equipment and Furnishings - Emergency Flotation Gear - Installation of Flotation Gear Rear Fittings with Spherical Leveling Washers03/21/2019
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 Switch08/03/2023
1 en Alert Fuel - Fuel Supply Line of LH Engine - Replacement of Fuel Supply Line05/06/2022
en Alert Fuel System - Engine Fuel System - Check Bowls of RH & LH Fuel Filters04/25/2023
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 Off07/31/2013
en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/03/2014
1 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door08/29/2017
en Alert Doors - Side Stairway Door - Improvement of Locking System08/29/2017
1 en Alert Doors - Side Stairway Door - Improvement of Locking System10/15/2019
2 en Alert Doors - Side Stairway Door - Improvement of Locking System02/25/2020
en Alert Doors - Flap Doors - VIP Flap Door Jettisoning Instruction Placard Issue01/22/2020
en Fuselage - Replacement of Intermediate Gear Box (IGB) Fairing - Corresponds to MOD 072681903/09/2015
en Fuselage - Upper Structure - Procedure for Replacement of RH & LH Splices Under Plates & Brackets of Main Gear Box (MGB) Bars02/09/2021
5 en Alert Fuselage - Intermediate Gear Box (IGB) Fairing03/09/2015
1 en Fuselage - Check for Presence of Blind Hole in TGB Attachment Fittings01/04/2008
en Alert Fuselage - Pilot's Floor - Absence of Floor Attachment Screws Under Pilot's and Copilot's Seats02/17/2010
en Alert Structure - Jettisoning System - Functional Check of Emergency Jettisoning System of Sliding Plug Doors08/18/2014
en Alert Windows - Jettisonable Windows - Check of Jettisonable Emergency Exit Window Panels08/08/2012
en Alert Windows - Cabin Windows - Check of Press-Studs on Window Jettisoning System07/16/2015
1 en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System02/10/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System02/10/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System02/10/2020
en Alert Windows - Cabin Jettisonable Windows - Improvement to Window Jettisoning System02/10/2020
en Alert Windows - Cabin Windows - Improvement to VIP Window Jettisoning02/08/2018
1 en Main Rotor - MRH Cone Restrainer Support Reinforcement07/10/2009
1 en Alert Main Rotor - Main Rotor Mast - Inspection of Upper Stop Fixation Screws & Cover Plate02/28/2023
en Main Rotor - Main Rotor Hub (MRH) - Inspection of MRH Sleeves06/30/2022
en Main Rotor Drive - MGB Lubrication System - Addition of a Magnetic Plug between MGB & Oil Cooler06/23/2017
1 en Main Rotor Drive - MGB Lubrication System - Addition of a Magnetic Plug between MGB & Oil Cooler07/25/2017
2 en Main Rotor Drive - MGB Lubrication System - Addition of a Magnetic Plug between MGB & Oil Cooler11/14/2018
1 en Main Rotor Drive - Epicyclic Module - Replacement of Epicyclic Module Second Stage Planet Gear Assemblies10/07/2016
2 en Main Rotor Drive - Epicyclic Module - Replacement of Epicyclic Module Second Stage Planet Gear Assemblies06/23/2017
1 en Alert Main Rotor Drive - MGB Emergency Spraying System - Increase in Reliability of EMLUB System by Addition of a Relay10/07/2016
en Alert Tail Rotor - Tail Rotor Assembly - Check of Angular Clearances of Tail Gear Box (TGB)06/30/2021
en Alert Rotor Flight Controls - Collective Controls - Replacement of Protective Cover of "SHEAR" Control on Pilot and Copilot Collective Sticks03/26/2018
2 en Alert Power Plant - LH Power Plant Fuel Supply Hose - Check of Fuel Supply Hose of LH Power Plant05/21/2021
Service Bulletins: EC725
NameRevisionLangSubjectDate
1 en Limitations - Fittings and Mounts - Periodic Replacement of Main Gearbox (MGB) Suspension Bar Attachment Pins08/25/2017
2 en Time Limits/Maintenance Checks - Main Rotor Hub - Checking Main Rotor Hub Coning Stop Support Attachment Lugs and Dome Fairing Support Attachment Lugs02/03/2009
1 en Time Limits - Maintenance Checks - Readjustment of Dome Fairing Support-to-Dome Fairing Attachment Screw Tightening Torque02/03/2009
2 en Time Limits - Maintenance Checks - Check of Bonding of Stainless Steel Protective Strip on Leading Edge of Main Rotor Blades04/22/2013
2 en Time Limits - Maintenance Check - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification04/23/2009
3 en Time Limits - Maintenance Check - Check of Magnetic Plug on Main Gearbox (MGB) Epicyclic Module - Main Module Chip Collector Modification07/13/2012
1 en Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate11/16/2017
2 en Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate02/26/2019
4 en Time Limits-Maintenance Checks - Main Rotor Hub - Visual Checks of Yokes of Rotating Swashplate02/28/2022
en Equipment and Furnishings - Emergency Floatation Gear - Check of Emergency Floatation Gear Installation09/25/2013
en Equipment & Furnishings - Hoist System - Check of Hoist Attachments Fitting01/25/2022
en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/03/2014
1 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door11/12/2014
2 en Doors - Side Stairway Door - Check for Correct Locking of Side Stairway Door08/29/2017
5 en Alert Fuselage - Intermediate Gear Box (IGB) Fairing03/09/2015
1 en Fuselage - Check for Presence of Blind Hole in TGB Attachment Fittings01/04/2008
en Main Rotor - Main Rotor Hub (MRH) - Inspection of MRH Sleeves06/30/2022
Service Bulletins: H160
NameRevisionLangSubjectDate
en Alert Scheduled-Unscheduled Maintenance - Lubrication of Locking Fingers on Windows Jettisonable Systems01/09/2025
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 Manual09/02/2005
3 en Alert Change to Maintenance Manual08/07/2008
en Alert Main Transmission - Visual Inspection of Rotor Mast Flange for Cracks08/27/1997
1 en Alert Main Transmission - Visual Inspection of Rotor Mast Flange for Cracks07/28/2017
en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap08/06/1999
1 en Alert Main Rotor System - Inspection and Replacement of Tension-Torsion-Strap08/31/1999
en Alert Main Rotor System - Introduction of a Life Limit for Main Rotor Blades with Bolted Lead Inner Weights02/14/2005
en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps03/29/2021
1 en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps05/06/2021
en Alert Main Rotor System - Rotor Blades - Reduced Inspection Interval Times for Blade Thimble02/19/2018
2 en Fuselage - Retrofit of a Hook System for Doors of Transmission and Engine Cowlings04/30/1999
2 en Alert Fuselage - Sliding Door - Affixing an Adhesive Seal on Door Jettison System03/30/2016
3 en Alert Visual Check and Repair of Tail Boom Vertical Fin05/05/1997
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 Fin10/04/2005
en Alert Tail Rotor Drive - Replacement of Bearings in Tail Rotor Transmission and Intermediate Gearbox, Reduction of Inspection Interval for Magnetic Plug04/14/2003
1 en Alert Tail Unit - Inspection of Wall Thickness of Skin Paneling of Vertical Fin07/03/2003
en Alert Tail Rotor - Check of Balance Weights and Control Lever09/23/2008
en Alert Tail Unit Assembly - Tail Rotor Gearbox - Inspection of Tail Rotor Gearbox Housing for Cracks05/24/2016
en Alert Tail Unit Assembly - Tail Rotor Gearbox - Inspection of Tail Rotor Gearbox Bellcrank Attachment Arm for Cracks01/31/2018
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 Bellows05/23/2016
5 en Alert Flight Control System - Flight Controls Main Rotor - Removal of Swashplate Bellows07/25/2017
en Main Rotor System - Swashplate - Check of Swashplate01/11/2023
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 Arm06/24/2013
en Main Rotor System - Swashplate - Check of Swashplate01/11/2023
en Emergency Anti-Torque Rotor Control (Yaw Control) - Recurring Inspection of Tail Rotor Actuator12/09/2024
1 en Alert Optional Equipment - Rescue Winch - Deactivation of Cable Cutter Function on Operator Handle08/04/2011
2 en Alert Electrical Systems - Inspection / Retrofit of a Ground Reference Connection to Generator Voltage Regulator05/04/2009
2 en Alert Airworthiness Limitations - Tail Rotor - Reduction of Lifetime of Certain Bevel Gears04/28/2010
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 Hardware08/03/2009
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 Deactivated08/29/2011
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 Plates09/14/2016
en Alert Equipment/Furnishings - Emergency Flashlight - Removal of Strap from Emergency Flashlight08/25/2021
en Alert Equipment / Furnishings - Cockpit Furnishings - IFR-Screens Must Not be Used on Helicopters05/23/2022
en Alert Fire Protection System - Fire Extinguishing System - Retrofit of Improved Clamps for Injection Tubes01/22/2007
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 Hoses02/12/2020
en Alert Doors and Service Covers - Jettisonable Sliding Door - Inspection of Emergency Jettison System04/26/2011
4 en Alert Main Rotor System - Swashplate - Removal of Swashplate Bellows05/23/2016
5 en Alert Main Rotor System - Swashplate - Removal of Swashplate Bellows07/25/2017
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-Straps03/29/2021
1 en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps05/06/2021
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 Lever07/09/2007
2 en Alert Tail Rotor System - Control Lever with Weights - Inspection of Control Lever08/06/2007
en Alert Tail Rotor Drive - Tail Rotor Drive Shaft - Inspection of Long Tail Rotor Drive Shaft for Correct Rivets05/04/2009
en Alert Tail Rotor Drive - Tail Rotor Gearbox - Inspection of Tail Rotor Gearbox Housing for Cracks05/24/2016
en Alert Tail Unit Assembly - Tail Rotor Gearbox - Inspection of Tail Rotor Gearbox Bellcrank Attachment Arm for Cracks01/31/2018
en Alert Rotor Flight Control - Cyclic Controls - Modification of Cyclic-Stick-Locking Device/-Centering Device04/14/2008
en Alert Rotor Flight Control - Tail Rotor- and Lateral Control - Check Bearings for Correct Attachment and Retrofit of Bushings04/28/2008
3 en Alert Rotor Flight Control - Tail Rotor- and Lateral Control - Check Bearings for Correct Attachment and Retrofit of Bushings02/08/2010
en Alert Rotor Flight Control - Rigging of Main Rotor Controls - Verify Correct Adjustment of Main Rotor Controls09/20/2010
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 Actuator07/07/2020
en Alert Rotor Flight Control - Upper Controls - Inspection for Correct Installation of Collective Bellcrank03/15/2021
en Rotor Flight Control - General - Inspection for Conformity of Flexballs04/29/2022
5 en Power Plant - Inlet Barrier Filter System - Retrofit of Inlet Barrier Filter System05/31/2017
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 Arm06/24/2013
1 en Alert Optional Equipment - External Mounted Hoist System - Check of Boom Support for Cracks06/23/2010
2 en Optional Equipment - External Mounted Hoist System - Unintended Detachment of Hoist Damper Unit03/04/2014
4 en Optional Equipment - External Mounted Hoist System - Unintended Detachment of Hoist Damper Unit02/12/2015
en Alert Optional Equipment - Outboard Load System - Introduction of Life Limit, a First Time & Repetitive Inspection & Replacement of Quick Release Pin Bolts07/24/2017
1 en Alert Wiring Harness - Inspection of Collective Lever (Pilot) Wiring Harness for Correct Position of Heat-Shrinkable Sleeve04/16/2015
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 Plates09/14/2016
en Alert Equipment / Furnishings - Cockpit Furnishings - IFR-Screens Must Not be Used on Helicopters05/23/2022
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 Hoses02/12/2020
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 3.0.206/06/2019
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 Bellows05/23/2016
3 en Alert Main Rotor System - Swashplate - Removal of Swashplate Bellows07/25/2017
en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps03/29/2021
1 en Alert Lifting System - Main Rotor System - Introduction of 5 Years Storage Time for Tension Torsion-Straps05/06/2021
en Alert Main Rotor Drive - Main Gearbox - Re-Identifcation of Rotor Mast Nut & Helical Gear Support12/01/2016
en Alert Rotor Flight Control - Collective Controls - Inspection of CABLE CUT Switch Guard on Collective Lever for Correct Attachment04/02/2020
en Alert Rotor Flight Control - Main Rotor Actuator - Visual Inspection of Main Rotor Actuator07/07/2020
en Alert Rotor Flight Control - Upper Controls - Inspection for Correct Installation of Collective Bellcrank03/15/2021
en Rotor Flight Control - General - Inspection for Conformity of Flexballs04/29/2022
1 en Power Plant - Inlet Barrier Filter System - Retrofit of Inlet Barrier Filter System08/02/2017
1 en Alert Power Plant - Engine Mounts - Inspection or Replacement of Engine Mount Bushings12/14/2018
1 en Optional Equipment - External Mounted Hoist System Unintended Detachment of Hoist Damper Unit02/12/2015
en Alert Optional Equipment - Outboard Load System - Introduction of Life Limit, a First Time & Repetitive Inspection07/24/2017
en Alert Wiring Harness - Trim System - Wire Chafing Inside Backshells of Trim Connectors06/04/2019
1 en Alert Wiring Harness - Cabin Wiring Harness - Inspection of Wire Harness Behind Front PAX Panels for Damage12/09/2019
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 Assembly06/29/2021
Service Information Letters
NameRevisionLangSubjectDate
en Incidences of Main Rotor Out of Track when Operating in Very Cold and High Altitude Conditions12/03/1992
Service Telexes: AS/SA 315
NameRevisionLangSubjectDate
en Tail Rotor Control Cable P/N 315a88 00.010 101/27/1987
en Limitations - Main Rotor Blade - Check of Blade Spar and Cuff in Cuff-to-Spar Assembly Area02/03/1998
Service Telexes: AS/SA 316
NameRevisionLangSubjectDate
en Limitations - Main Rotor Blade - Check of Blade Spar and Cuff in Cuff-to-Spar Assembly Area02/03/1998
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 3160
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 319
NameRevisionLangSubjectDate
en Limitations - Main Rotor Blade - Check of Blade Spar and Cuff in Cuff-to-Spar Assembly Area02/03/1998
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 321
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 330
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 332
NameRevisionLangSubjectDate
1 en Limitations - Check of Eye Bolt Hinge at MRH Blade Horn Assembly07/25/1997
en Limitations - By-Pass Valve Closing Check for Fuel Filters07/24/1998
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 350
NameRevisionLangSubjectDate
en Time Limits Check of Attachment Areas of Heat Shield of Tail Rotor Drive Shaft Forward Fairing08/03/2000
en Tail Rotor Drive05/13/1987
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 355
NameRevisionLangSubjectDate
en Starter Generator Vibrations10/27/1999
en Tail Rotor Drive05/13/1987
en Urgent Equipment and Furnishings Landing Light Operating Limitation08/02/2000
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 360
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 365
NameRevisionLangSubjectDate
en Cracks on Beams X 3826.7 and X 4338.7 Under Transmission Deck. Cracks on Transmission Deck02/24/1994
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 366
NameRevisionLangSubjectDate
en Cracks on Beams X 3826.7 and X 4338.7 Under Transmission Deck. Cracks on Transmission Deck02/24/1994
en Time Limits - Blades - Tie-Bar Kevlar Verification08/19/1992
Service Telexes: AS/SA 532
NameRevisionLangSubjectDate
1 en Limitations - Check of Eye Bolt Hinge at MRH Blade Horn Assembly07/25/1997
en Limitations - By-Pass Valve Closing Check for Fuel Filters07/24/1998
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 550
NameRevisionLangSubjectDate
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 555
NameRevisionLangSubjectDate
en Starter Generator Vibrations10/27/1999
en Urgent Equipment and Furnishings Landing Light Operating Limitation08/02/2000
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: AS/SA 565
NameRevisionLangSubjectDate
en Cracks on Beams X 3826.7 and X 4338.7 Under Transmission Deck. Cracks on Transmission Deck02/24/1994
en Fuel - Electrical Bonding of Support of Electrostatic Ground Connector of Metal Ferry Fuel Tanks06/06/2000
Service Telexes: EC120
NameRevisionLangSubjectDate
en Time Limits - Check of Coupling Tube Assembly P/N C631A1002101 on Engine-to-MGB Coupling08/26/1999
Work Cards
NameRevisionLangSubjectDate
en Crack Detection07/30/2010
en Sliding Doors - Removal - Installation
en Sliding Doors - Adjustment
en Main Rotor Head07/31/2008
Miscellaneous
NameRevisionLangSubjectDate
en Engineering Report: Addendum ASB 53.00.42 & 53.00.4301/29/2003
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 Blades06/12/1998