RegNotify

EASA Regulations for Airbus Helicopters EC135

47 airworthiness directives and regulations affecting Airbus Helicopters EC135.

EASA AD 2026-0031

Tail Rotor — Tail Rotor Blades — Inspection

EASA Airworthiness Directive 2026-0031 is issued for Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It mandates repetitive inspections of tail rotor blade assemblies with part number L642A2002121 due to risks of intergranular corrosion that may cause cracks and potential rupture. The directive applies to all variants and serial numbers of the affected helicopter models.

Feb 19, 2026
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635

EASA AD 2026-0032

Tail Rotor — Tail Rotor Blades — Inspection

EASA Airworthiness Directive 2026-0032 is an airworthiness directive addressing inspection requirements for tail rotor blade assemblies on Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It specifically targets tail rotor blade assemblies with part numbers L642A2002111 and L642A2002112 due to risks of intergranular corrosion and potential cracks. The directive mandates repetitive inspections to ensure continued airworthiness and safety.

Feb 19, 2026
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635

EASA AD 2026-0024

Rotors Flight Control — Ball Bearing Control System — Inspections

EASA Airworthiness Directive 2026-0024 is issued for Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models with serial numbers 0005 to 1276 inclusive. It addresses inspections of the rotors flight control ball bearing control system, specifically focusing on the yaw actuator assemblies and control rods. The directive mandates inspections to detect potential failures that could lead to loss of tail rotor control.

Feb 5, 2026
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635

EASA AD 2025-0260

Rotors Flight Control — Ball Bearing Control System — Inspection

EASA Airworthiness Directive 2025-0260 is an airworthiness directive addressing the ball bearing control system in the rotors flight control of Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It applies to all serial numbers up to 1999 inclusive and mandates inspections of specific ball pivot and control rod parts to ensure continued airworthiness. The directive introduces inspection requirements to prevent loss of tail rotor control due to broken control rods in the yaw actuator assembly.

Nov 25, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635

EASA AD 2022-0168R2

Rotorcraft Flight Manual — Section Emergency Procedures — Amendment; Integrated Modular Avionics — Ethernet Network — Inspection

The Rotorcraft Flight Manual — Section Emergency Procedures — Amendment; Integrated Modular Avionics — Ethernet Network — Inspection is a regulatory document applicable to AIRBUS HELICOPTERS DEUTSCHLAND models EC135, 635, and MBB-BK 117. It addresses updates to the emergency procedures section of the flight manual and introduces inspection requirements for the integrated modular avionics Ethernet network. The document aims to enhance operational safety and avionics reliability for these specific rotorcraft types.

Oct 28, 2025
Airworthiness DirectiveFlight OpsMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117

EASA AD 2025-0174R1

Fuselage — Rear Structure / Rear Frame — Inspection

Fuselage — Rear Structure / Rear Frame — Inspection is a regulatory document concerning the inspection requirements for the rear structure and rear frame of AIRBUS HELICOPTERS DEUTSCHLAND EC135 and EC635 helicopter models. It provides guidance on maintaining the structural integrity of these specific helicopter fuselage components to ensure continued airworthiness and safety.

Sep 22, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635

EASA AD 2015-0226R8

Equipment / Furnishings — Hoist — Test / Replacement

EASA Airworthiness Directive 2015-0226R8 is a regulatory document addressing the inspection, testing, and replacement requirements for Goodrich externally mounted rescue hoists installed on various helicopter models including Leonardo AW109SP, AB139, AW139, AB412; Bell Textron 212, 214, 412, 429, 430; Airbus Helicopters AS 365 N3, AS 332 L2, EC225 LP, MBB-BK117 C-2, EC135, EC635; MD Helicopters MD900; and Sikorsky S-61, S-76, and S-92A. The directive mandates load checks, cable replacements, and overload clutch replacements to ensure continued airworthiness and safety of hoist operations.

Jul 16, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters SA 330Airbus Helicopters AS 332Airbus Helicopters EC 225Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Bell 429Bell 430Bell Textron Inc. (Bti) 212Bell Textron Inc. (Bti) 412Leonardo S.P.A. Helicopters A109Leonardo S.P.A. Helicopters A119Leonardo S.P.A. Helicopters AB139Leonardo S.P.A. Helicopters AW139Leonardo S.P.A. Helicopters AB212Leonardo S.P.A. Helicopters AB412Md Helicopters Inc (Mdhi) MD900Mcdermott 214 Holdings, 214Sikorsky S-61Sikorsky S-76Sikorsky S-92

EASA AD 2025-0108

SUPERSEDED BY EASA AD 2025-0260

EASA Airworthiness Directive 2025-0108 is an interim safety directive affecting Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models with serial numbers up to 1999. It mandates a one-time inspection of specific ball bearing control system parts, including ball pivots, yaw actuator assemblies, and control rods, to address a reported loss of tail rotor control. The directive requires reporting inspection results to Airbus Helicopters Deutschland to support ongoing investigation.

May 8, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635

EASA AD 2025-0051R1

Equipment / Furnishings — Hoist — Replacement

EASA Airworthiness Directive 2025-0051R1 is a regulatory update addressing the replacement of rescue hoist assemblies on various Airbus Helicopters and Leonardo helicopter models, including the H160-B, EC 225 LP, EC 175 B, AS 332 L2, AS 365 N3, EC135, MBB-BK117, AW109SP, AB139, AW139, AW169, and AW189. The directive mandates inspections and replacement of affected hoist assemblies due to potential non-conformant overload clutch assemblies that could lead to hoist failure. This AD applies to all serial numbers of the listed helicopter models and specifies affected part numbers and serviceable part criteria.

May 7, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC175Airbus Helicopters H160Airbus Helicopters SA 330Airbus Helicopters AS 332Airbus Helicopters EC 225Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Leonardo S.P.A. Helicopters A109Leonardo S.P.A. Helicopters A119Leonardo S.P.A. Helicopters AB139Leonardo S.P.A. Helicopters AW139Leonardo S.P.A. Helicopters AW169Leonardo S.P.A. Helicopters AW189

EASA AD 2025-0055

Equipment / Furnishings — Rescue Hoist Cable Drum — Inspection

EASA Airworthiness Directive 2025-0055 is an airworthiness directive addressing the inspection of rescue hoist cable drums installed on Airbus Helicopters Deutschland GmbH EC135, EC635, and MBB-BK117 helicopter models. It mandates repetitive inspections of specific rescue hoist assemblies with certain part numbers to detect cracks that could compromise hoist cable operation. The directive applies to all serial numbers up to 1999 inclusive for the specified helicopter models.

Mar 11, 2025
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117

EASA AD 2024-0249

Instruments — Warning Unit Emergency Off Switches — Operational Check

EASA Airworthiness Directive 2024-0249 is an operational check directive targeting the emergency off switches of warning units installed on Airbus Helicopters Deutschland GmbH EC135, EC635, and MBB-BK117 helicopter models. It mandates repetitive operational checks of these switches to detect mechanical failures that could lead to engine shutdown or fuel shut-off valve issues. The directive applies to all variants and serial numbers of the specified helicopter models.

Dec 19, 2024
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117

EASA AD US-2024-20-07

Equipment / Furnishings - Emergency Float Kit Activation Handle - Repetitive Inspections / Replacement

The document titled 'Equipment / Furnishings - Emergency Float Kit Activation Handle - Repetitive Inspections / Replacement' is a regulatory directive addressing the maintenance requirements for the emergency float kit activation handle on certain aircraft. It mandates repetitive inspections and replacement procedures to ensure the proper functioning of this critical safety equipment. The directive applies to aircraft equipped with the specified emergency float kit activation handle assemblies.

Nov 29, 2024
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters EC 120 BAirbus Helicopters BO 105Airbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Bell 206Bell 407Bell Textron Inc. (Bti) 210Bell Textron Inc. (Bti) 212Bell Textron Inc. (Bti) 412Leonardo S.P.A. Helicopters AB212Leonardo S.P.A. Helicopters AB412Md Helicopters Inc (Mdhi) 369Md Helicopters Inc (Mdhi) 500NRobinson R44 (Raven)Robinson R66Sikorsky S-76

EASA AD 2024-0195R1

Engine Fuel & Control — Electronic Engine Control Unit — Software Update; Preference Injector — Non-extinguishing Test / Replacement

EASA Airworthiness Directive 2024-0195R1 addresses safety concerns related to SAFRAN Helicopter Engines ARRIUS 2B2 engines, commonly installed on Airbus Helicopters Deutschland EC135 models. The directive mandates software updates to the Electronic Engine Control Unit and introduces requirements for non-extinguishing tests and replacement of the preference injector to prevent engine flame out. This AD applies to all serial numbers of the ARRIUS 2B2 engine.

Oct 22, 2024
Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIUS 2Airbus Helicopters EC135

EASA AD 2024-0149

SUPERSEDED BY EASA AD 2026-0027

EASA Airworthiness Directive 2024-0149 is issued for SAFRAN Helicopter Engines ARRIUS 2B2 engines, which are commonly installed on Airbus Helicopters Deutschland EC135 and EC635 models. This directive mandates compliance with updated airworthiness limitations and maintenance tasks as specified in the latest Airworthiness Limitations Section of the ARRIUS 2B2 Maintenance Manual. It ensures continued airworthiness by enforcing life limits and maintenance intervals for engine components.

Jul 30, 2024
Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIUS 2Airbus Helicopters EC135Airbus Helicopters EC635

EASA AD 2023-0197

Tail Rotor Drive — Flexible Couplings and Tail Rotor Shafts — Inspection

EASA Airworthiness Directive 2023-0197 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters Deutschland GmbH EC135 and EC635 helicopter models. It mandates inspection of the tail rotor drive flexible couplings and tail rotor shafts due to reported occurrences of ruptured or deformed flexible couplings. The directive applies to all variants and serial numbers of the specified helicopter models.

Nov 10, 2023
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters EC635

EASA AD 2023-0066

Equipment / Furnishings — Hoist Boom Assembly — Inspection

EASA Airworthiness Directive 2023-0066 is an airworthiness directive issued by the European Union Aviation Safety Agency concerning the inspection of hoist boom assemblies on Airbus Helicopters Deutschland GmbH EC135, EC635, and MBB-BK117 helicopter models. The directive mandates repetitive inspections of specific hoist boom assembly parts identified by part numbers 44301-500, 44307-500, and 44307-500-1 to ensure continued airworthiness and safety. It applies to all variants and serial numbers of the affected helicopter models.

Mar 24, 2023
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Airbus Helicopters EC635Airbus Helicopters MBB-BK117

EASA AD 2022-0203

SUPERSEDED BY EASA AD 2024-0149

EASA Airworthiness Directive 2022-0203 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting SAFRAN Helicopter Engines ARRIUS 2B2 engines, commonly installed on Airbus Helicopters Deutschland EC135 and EC635 helicopters. The directive mandates compliance with updated airworthiness limitations and maintenance tasks as specified in the SAFRAN ARRIUS 2B2 Maintenance Manual Chapter 05-10 Airworthiness Limitations Section Temporary Update No. 05-9.

Sep 30, 2022
Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIUS 2Airbus Helicopters EC135Airbus Helicopters EC635

EASA AD 2022-0143

SUPERSEDED BY EASA AD 2022-0168

EASA Airworthiness Directive 2022-0143 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters Deutschland GmbH EC135, EC635, MBB-BK117, Airbus Helicopters EC 175 B, and H160-B helicopters. The directive addresses design deficiencies in the Integrated Modular Avionics Ethernet network that have caused multiple Multi-Function Display failures. It mandates inspections and corrective actions to ensure continued safe operation of these helicopter models.

Jul 8, 2022
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC175Airbus Helicopters H160Airbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Airbus Helicopters EC635MBB-BK117Airbus Helicopters EC175 BAirbus Helicopters H160-B