EASA Regulations for Airbus Helicopters AS 350

98 airworthiness directives and regulations affecting Airbus Helicopters AS 350.

EASA AD 2023-0044

Feb 28, 2023

Main Rotor Drive — Main Gearbox Planet Gear — Inspection

EASA Airworthiness Directive 2023-0044 is an airworthiness directive issued by the European Union Aviation Safety Agency concerning Airbus Helicopters AS 350, EC 130, and AS 355 models. It mandates repetitive inspections of the main gearbox (MGB) planet gear bevel wheel to detect particle contamination that could lead to structural failure of the MGB drive. The directive applies to specific MGB part numbers and requires compliance with Airbus Helicopters Alert Service Bulletins for inspection and corrective actions.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355

EASA AD 2023-0028

Feb 1, 2023

Superseded by EASA AD 2023-0214

EASA Airworthiness Directive 2023-0028 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters EC 130 T2 models with modification 074581 embodied in production. The directive addresses inspection requirements for the rear transmission shaft bearing support rivets and local structure to prevent failure of the tail rotor drive shaft and loss of yaw control. It includes instructions for inspecting rivet conditions and paint presence on the tail boom corner support.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters EC 130 T2

EASA AD 2018-0104R2

Dec 15, 2022

Fuselage — Tail Boom / Fenestron Junction Frame — Inspection

EASA Airworthiness Directive 2018-0104R2 is an updated regulatory document addressing inspection and modification requirements for Airbus Helicopters EC 130 B4 and EC 130 T2 models. It focuses on the fuselage tail boom and fenestron junction frame to detect and prevent crack propagation that could lead to structural failure and loss of helicopter control. The directive applies to all serial numbers except those with specific Airbus modifications 074775 or 074581.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters EC 130 B4
  • Airbus Helicopters EC 130 T2

EASA AD 2022-0251-E

Dec 14, 2022

Superseded by EASA AD 2023-0190-E

EASA Airworthiness Directive 2022-0251-E is an emergency directive addressing Airbus Helicopters EC 130 T2 models equipped with specific tail rotor drive shafts (P/N 350A34-5010-00 or 350A34-5020-00). It mandates repetitive vibration level checks of the tail rotor drive shaft to detect potential cracks that could lead to failure and loss of yaw control. This directive applies to helicopters with Airbus Helicopters modification 079809 embodied in production.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters EC 130 T2

EASA AD 2022-0246

Dec 12, 2022

Main Rotor — Main Rotor Blades — Inspection

EASA Airworthiness Directive 2022-0246 is an airworthiness directive addressing inspection requirements for main rotor blades on Airbus Helicopters AS 350 and AS 355 models. It applies to specific part numbers of main rotor blades that have shown occurrences of debonding on the stainless steel leading edge protection. The directive mandates repetitive inspections and, depending on findings, repair or replacement of affected parts to ensure continued airworthiness.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355

EASA SIB 2019-10R1

Sep 21, 2022

Power Turbine Over-Speed Protection on ARRIEL 2D and ARRIEL 2B1 Engines

EASA Safety Information Bulletin 2019-10R1 is an airworthiness bulletin addressing power turbine over-speed protection on ARRIEL 2D and ARRIEL 2B1 engines installed on AS 350 B3 and EC 130 T2/B4 helicopters. It provides information on the design and safety features related to turbine blade shedding to prevent turbine disc burst and introduces electronic over-speed protection via FADEC software and wiring modifications. The bulletin includes references to Airbus Helicopters and SAFRAN service bulletins supporting these modifications.

Safety Information Bulletin
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Safran ARRIEL 2

EASA SIB 2022-05

Jul 1, 2022

[Correction] Rotorcraft Flight Manual Update related to Servo Control Transparency

EASA Safety Information Bulletin 2022-05 is a correction notice addressing rotorcraft flight manual updates related to servo control transparency for Airbus Helicopters AS 350 (all models except B3 with dual hydraulic system), AS 355 E, and EC 120 B helicopters. It highlights the phenomenon of servo control transparency, which can cause unexpected flight control loads and flight path deviations, particularly affecting helicopters with single hydraulic systems and specific engine models like the ARRIEL 2B. The bulletin references previous service letters and airworthiness bulletins from Airbus Helicopters, FAA, and CASA Australia.

Safety Information Bulletin
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355
  • Airbus Helicopters EC 120 B

EASA AD 2022-0128

Jun 30, 2022

Fuselage — Main Gearbox Bracket Bolts — Inspection

EASA Airworthiness Directive 2022-0128 is an airworthiness directive addressing inspection requirements for main gearbox bracket bolts on Airbus Helicopters AS 350, EC 130, and AS 355 models. It targets specific affected bolts with part numbers 22201BC080020L, 22201BC080021L, and 22201BC080022L to prevent potential separation of suspension-bar fittings. The directive mandates inspections and corrective actions to ensure continued airworthiness and safety.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355

EASA AD 2022-0051

Jun 9, 2022

[Correction] Fuselage — Rear Structure Junction Frame Reinforcement Angles — Inspection

EASA Airworthiness Directive 2022-0051 is a corrective directive addressing inspection requirements for the rear structure junction frame reinforcement angles on Airbus Helicopters AS 350 and AS 355 models. It applies to specific serial numbers and affected parts, including junction frames reinforced by modification 073215 or equipped with certain reinforcement angles. The directive mandates repetitive inspections to detect cracks that could lead to tail boom loss and specifies optional modification as a terminating action.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355

EASA AD 2022-0077-E

Apr 29, 2022

Rotors Flight Control — Flight Control Flexball Cables — Replacement

EASA Airworthiness Directive 2022-0077-E is an emergency directive addressing flight control flexball cables on various Airbus Helicopters models including AS 350, AS 355, EC 130, EC 135, EC 635, and MBB-BK 117 series. The directive identifies specific part numbers and serial numbers of flexball cables that are not compliant with approved design standards. It mandates replacement of these affected parts to ensure continued airworthiness and safe flight control operation.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355
  • Airbus Helicopters EC135
  • Airbus Helicopters 635
  • Airbus Helicopters MBB-BK 117
  • Airbus Helicopters EC 135
  • Airbus Helicopters EC 635

EASA SIB 2021-05R1

Apr 8, 2022

Fuel Shut-off Lever Modification

EASA Safety Information Bulletin 2021-05R1 is an airworthiness bulletin addressing a modification to the fuel shut-off lever on Airbus Helicopters AS 350 series models, including AS 350 B, B1, B2, B3, BA, BB, and D helicopters. The bulletin revises the original SIB 2021-05 and provides updated guidance on a design modification to reduce the risk of inadvertent activation of the floor-mounted fuel shut-off lever. This modification aims to enhance safety following a fatal accident involving an AS 350 B2 helicopter.

Safety Information Bulletin
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130

EASA AD 2022-0053

Mar 23, 2022

Landing Gear — Skid-Type Landing Gear — Inspection

EASA Airworthiness Directive 2022-0053 is an airworthiness directive addressing the inspection of skid-type landing gear assemblies on Airbus Helicopters EC 120 B and EC 130 T2 and B4 models. It mandates a one-time external and internal inspection for corrosion and cracks on specified landing gear part numbers. The directive applies to all serial numbers of the affected helicopter models and includes detailed definitions of affected parts and sub-assemblies.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters EC 120 B
  • Airbus Helicopters EC 130 T2
  • Airbus Helicopters EC 130 B4

EASA AD 2011-0072-CN

Mar 4, 2022

CANCELLED: Equipment / Furnishings — Emergency Flotation Gear Attachment Brackets — Inspection / Replacement

EASA Airworthiness Directive 2011-0072-CN is a cancellation notice for the previous directive concerning the inspection and replacement of emergency flotation gear attachment brackets on Airbus Helicopters AS 350 and AS 355 models. This cancellation applies to all serial numbers of AS 350 B, BA, BB, B1, B2, B3, D and AS 355 E, F, F1, F2, N, NP helicopters equipped with fixed emergency flotation gear parts. The directive confirms that the previously mandated inspections are now part of regular maintenance schedules and that no unsafe condition requiring an AD exists.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355

EASA AD 2021-0283R1

Feb 25, 2022

Superseded by EASA AD 2023-0028

EASA Airworthiness Directive 2021-0283R1 is an updated safety directive addressing inspection requirements for Airbus Helicopters EC 130 T2 models equipped with modification 074581. It mandates repetitive inspections of the rear transmission shaft bearing support rivets and local structure to detect cracks or rivet degradation that could lead to tail rotor drive shaft failure and loss of yaw control.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters EC 130 T2

EASA AD 2014-0076R3

Nov 30, 2021

Superseded by 2022-0051

EASA Airworthiness Directive 2014-0076R3 is an updated safety directive addressing inspection and modification requirements for Airbus Helicopters AS 350 and AS 355 models. It focuses on the rear structure junction frame reinforcement angles, specifically parts with P/N 350A08.2493.21 or 350A08.2493.23, to prevent cracks that could lead to tail boom loss. The directive mandates repetitive inspections and optional terminating modifications to ensure continued airworthiness.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355

EASA AD 2021-0235-E

Oct 28, 2021

Superseded by EASA Emergency AD 2021-0283-E

EASA Airworthiness Directive 2021-0235-E is an emergency directive addressing a safety issue on Airbus Helicopters EC 130 T2 models equipped with modification 074581. It mandates repetitive inspections of the rear transmission shaft bearing support rivets and surrounding structure to detect cracks or damage. This directive aims to prevent potential failure of the tail rotor drive shaft and loss of yaw control.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters EC 130 T2

EASA AD 2021-0194R1

Oct 8, 2021

Superseded by EASA AD 2024-0133

EASA Airworthiness Directive 2021-0194R1 is a regulatory update affecting Airbus Helicopters AS 350 and EC 130 models, including variants B, BA, BB, B1, B2, B3, D, B4, and T2. This directive mandates compliance with updated airworthiness limitations and maintenance tasks as specified in the latest Aircraft Maintenance Manual Chapter 04 Airworthiness Limitations Section revisions. It ensures continued airworthiness by enforcing life limits and maintenance intervals for critical components.

Airworthiness DirectiveSuperseded
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130

EASA AD 2021-0216

Sep 23, 2021

Main Rotor Drive — Engine-to-Main Gearbox Coupling Shaft — Re-identification

The document titled 'Main Rotor Drive — Engine-to-Main Gearbox Coupling Shaft — Re-identification' applies to AIRBUS HELICOPTERS models AS 350 and EC 130. It addresses the re-identification process for the coupling shaft connecting the engine to the main gearbox in these helicopter types. The directive ensures proper tracking and verification of this critical component to maintain airworthiness standards.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130

EASA AD 2020-0175-CN

Sep 13, 2021

CANCELLED: Doors — Sliding Doors — Inspection

EASA Airworthiness Directive Cancellation Notice 2020-0175-CN is an official cancellation of the previous EASA AD 2020-0175, which applied to Airbus Helicopters AS 350 and AS 355 models equipped with sliding doors. The original directive required inspections of sliding door components due to a reported in-flight door loss incident. This cancellation confirms that the unsafe condition is no longer considered a fleet-wide risk.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355

EASA AD 2015-0094-CN

Aug 20, 2021

CANCELLED: Main Rotor Drive — Bi-Directional Suspension Cross-Bar — Inspection

EASA Airworthiness Directive Cancellation Notice 2015-0094-CN is an official cancellation of the previous EASA AD 2015-0094 concerning the inspection of the main rotor drive bi-directional suspension cross-bar on Airbus Helicopters AS 350, AS 355, and EC 130 models. This cancellation applies to all serial numbers of AS 350 B, BA, BB, B1, B2, B3, D; AS 355 E, F, F1, F2, N, NP; and EC 130 B4 and T2 helicopters. The notice confirms that the inspection requirements have been incorporated into newer airworthiness limitation sections and related ADs.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355