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EASA Regulations for Airbus Helicopters AS 355

55 airworthiness directives and regulations affecting Airbus Helicopters AS 355.

EASA SIB 2022-05

[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.

Jul 1, 2022
Safety Information BulletinSafety MgmtMaintenanceAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355Airbus Helicopters EC 120 B

EASA AD 2022-0128

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.

Jun 30, 2022
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2022-0051

[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.

Jun 9, 2022
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2022-0077-E

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.

Apr 29, 2022
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355Airbus Helicopters EC135Airbus Helicopters 635Airbus Helicopters MBB-BK 117Airbus Helicopters EC 135Airbus Helicopters EC 635

EASA AD 2022-0069

SUPERSEDED BY EASA AD 2022-0180

EASA Airworthiness Directive 2022-0069 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters AS 355 series, including AS 355 E, F, F1, F2, and N models. The directive addresses inspection and replacement requirements for specific right-hand and left-hand fan support parts identified by part numbers 355A34-1041-05, 355A34-1041-03, 355A34-1040-05, and 355A34-1040-03. It aims to prevent potential failure of the tail rotor drive and main gearbox oil cooling function due to broken fan support legs.

Apr 19, 2022
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355

EASA AD 2011-0072-CN

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.

Mar 4, 2022
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2014-0076R3

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.

Nov 30, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2021-0265

Power Plant — Cowlings — Inspection / Repainting

EASA Airworthiness Directive 2021-0265 is an airworthiness directive addressing Airbus Helicopters models AS 355, SA 365, AS 365, and EC 155. It mandates inspection and possible repainting or replacement of engine upper fixed cowlings with specific part numbers to prevent fire risks caused by finish paint applied over primer layers. The directive applies to all serial numbers of the affected helicopter models.

Nov 23, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters SA 365

EASA AD 2020-0175-CN

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.

Sep 13, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2015-0094-CN

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.

Aug 20, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2010-0006-CN

CANCELLED: Time Limits / Maintenance Checks — Tail Rotor Pitch-Change Links — Inspection

EASA Airworthiness Directive Cancellation Notice 2010-0006-CN cancels the previous EASA AD 2010-0006 concerning time limits and maintenance checks for tail rotor pitch-change links 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 affected tail rotor pitch-change link parts. The notice confirms that the inspection requirements have been incorporated into updated Airworthiness Limitations Sections for these helicopter models.

Aug 20, 2021
Agency DecisionMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355Airbus Helicopters AS 350 BAirbus Helicopters AS 350 BAAirbus Helicopters AS 350 BBAirbus Helicopters AS 350 B1Airbus Helicopters AS 350 B2Airbus Helicopters AS 350 B3Airbus Helicopters AS 350 DAirbus Helicopters AS 355 EAirbus Helicopters AS 355 FAirbus Helicopters AS 355 F1Airbus Helicopters AS 355 F2Airbus Helicopters AS 355 NAirbus Helicopters AS 355 NP

EASA AD 2021-0193

SUPERSEDED BY EASA AD 2024-0134

EASA Airworthiness Directive 2021-0193 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters AS 355 models including AS 355 E, F, F1, F2, N, and NP. It mandates compliance with updated airworthiness limitations and maintenance tasks as specified in the Airbus Helicopters AS 355 Aircraft Maintenance Manual Chapter 04 Airworthiness Limitations Section revisions. The directive ensures continued airworthiness by enforcing life limits and maintenance intervals for critical components of these helicopters.

Aug 20, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355

EASA AD 2017-0032-CN

CANCELLED: Main Rotor — Main Rotor Hub / Mast Attachment Screws — Inspection

EASA Airworthiness Directive Cancellation Notice 2017-0032-CN is a cancellation notice issued by EASA for Airbus Helicopters AS 350, AS 355, and EC 130 models. It cancels the previous AD 2017-0032 which required inspection of main rotor hub/mast attachment screws due to corrosion concerns. The cancellation confirms that the original unsafe condition was isolated and no longer applicable to the fleet.

Aug 11, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2007-0256-CN

CANCELLED: PACIFIC SCIENTIFIC COMPANY — Seat Restraint System Plastic Rotary Buckle Handle — Inspection / Replacement

EASA Airworthiness Directive Cancellation Notice 2007-0256-CN cancels the previous EASA AD 2007-0256 concerning Pacific Scientific Company seat restraint system plastic rotary buckle handles. The affected parts include Pacific Scientific rotary buckles with part numbers 1111430-XX and 1111475-XX, manufactured between November 2004 and May 2007, installed on TSO-C114 approved restraint systems used on Airbus Helicopters AS 350, AS 355, EC120, EC130, and EC155 models. This cancellation aligns with FAA AD 2021-07-13 and reflects that the original compliance period has expired for rotorcraft in EASA states.

May 11, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters AS 355Airbus Helicopters EC120Airbus Helicopters EC130Airbus Helicopters EC155

EASA AD 2021-0099

SUPERSEDED BY EASA AD 2023-0075

EASA Airworthiness Directive 2023-0075 is an airworthiness directive that supersedes previous directives related to Airbus Helicopters AS 350, EC 130, and AS 355 models. It addresses safety and maintenance requirements for these helicopter types to ensure continued airworthiness and operational safety. The directive updates or replaces earlier regulatory instructions to reflect current safety standards.

Apr 9, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2021-0048

SUPERSEDED BY EASA AD 2023-0064

EASA Airworthiness Directive 2021-0048 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters models AS 350, EC 130, AS 355, SA 365, and AS 365. It addresses a safety issue related to the main rotor pitch rod upper links, which if not corrected, could lead to loss of control of the helicopter. The directive mandates marking and repetitive inspections of these components to detect any loss of torque and prevent potential failures.

Feb 16, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters SA 365

EASA AD 2021-0027R1

Rotors Flight Control — Collective Controls / Protective Cover — Modification

EASA Airworthiness Directive 2021-0027R1 is a regulatory document addressing a modification to the collective controls protective cover on Airbus Helicopters AS 355 NP models. It mandates replacement and re-identification of the pilot collective stick protective cover for the "SHEAR" control pushbutton to prevent mechanical deformation that could lead to unintended hoist cable shearing. This directive applies to all serial numbers of AS 355 NP helicopters.

Jan 22, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355Airbus Helicopters AS 355 NP

EASA AD 2021-0023

Equipment / Furnishings — Cyclic Stick Grip UP/DOWN Hoist Control Switch — Modification

EASA Airworthiness Directive 2021-0023 is an airworthiness directive issued by EASA concerning Airbus Helicopters AS 350 and AS 355 models. It addresses the cyclic stick grip UP/DOWN hoist control switch, specifically the affected UP/DOWN switches with Part Number AC66444 installed on DUNLOP cyclic stick grips. The directive mandates modifications to prevent unintended activation of the rescue hoist cable cutter function.

Jan 19, 2021
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2020-0266

Rotorcraft Flight Manual — N2 Speed Avoidance Range Limitation — Amendment / Placard — Installation

EASA Airworthiness Directive 2020-0266 addresses a safety issue affecting Airbus Helicopters AS 355 E, F, F1, and F2 models equipped with Rolls-Royce Corporation 250-C20F engines. The directive mandates amendments to the Rotorcraft Flight Manual and installation of a placard to avoid a specific N2 turbine speed range that can cause fatigue failures in power turbine 3rd stage wheels. This AD aims to prevent engine power loss and potential helicopter control issues.

Dec 8, 2020
Airworthiness DirectiveFlight OpsMaintenanceSafety MgmtAirbus Helicopters AS 355Airbus Helicopters AS 355 EAirbus Helicopters AS 355 FAirbus Helicopters AS 355 F1Airbus Helicopters AS 355 F2

EASA AD 2020-0224R1

Tail Rotor — Tail Rotor Blades — Inspection / Replacement / Modification

EASA Airworthiness Directive 2020-0224R1 is a regulatory document addressing inspection, replacement, and modification requirements for tail rotor blades on Airbus Helicopters AS 350 and AS 355 models. It targets specific pre-modification 075580 tail rotor blades identified by certain part numbers due to risks of debonding of leading edge protection shields. The directive mandates inspections and replacement to ensure continued airworthiness and safe operation of affected helicopters.

Nov 11, 2020
Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355