EASA Regulations for Airbus Helicopters AS 355

54 airworthiness directives and regulations affecting Airbus Helicopters AS 355.

EASA AD 2025-0287

Powerplant — Fuel Draining System — Inspection

EASA Airworthiness Directive 2025-0287 is an airworthiness directive addressing Airbus Helicopters AS 355 series, including AS 355 E, F, F1, F2, N, and NP models. It mandates inspections and corrective actions for the fuel draining system's rear cargo compartment hoses, specifically part number 350A21010123, to prevent potential damage from hot air leakage and fire risks. The directive includes operational checks, installation of thermal paper, and silicone tape application to affected parts.

Dec 17, 2025

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355

EASA AD 2025-0159

Placards and Markings — Unlock Sliding Door — Installation

EASA Airworthiness Directive 2025-0159 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters AS 350, AS 355, EC 120, and EC 130 models. The directive addresses the installation of additional safety placards and markings for the sliding door unlock instructions on these helicopters. It applies to all serial numbers that have not incorporated modification 0720257.

Jul 24, 2025

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355Airbus Helicopters EC 120 B

EASA AD 2025-0052

Tail Rotor Drive — Fan Support Legs — Inspection / Replacement

EASA Airworthiness Directive 2025-0052 is an airworthiness directive addressing Airbus Helicopters AS 355 series helicopters, specifically models E, F, F1, F2, and N. It mandates inspections and potential replacement of the left-hand and right-hand tail rotor transmission fan support legs, identified by part numbers 355A34104006 and 355A34104106. The directive aims to prevent failure of these support legs which could lead to loss of tail rotor drive and control of the helicopter.

Feb 28, 2025

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355

EASA AD 2025-0025

Equipment / Furnishings — Emergency Release Control of Cargo-Swing Installation — Inspection

EASA Airworthiness Directive 2025-0025 is an airworthiness directive issued by EASA concerning Airbus Helicopters AS 350 B2, AS 350 B3, AS 355 NP, AS 355 N, and EC 130 B4 models equipped with ONBOARD systems 3500LB having Part Number 704A41811035. The directive mandates inspection and potential adjustment or replacement of the emergency release control of the cargo-swing installation to ensure safe operation. This directive addresses a safety issue related to the incorrect adjustment of the release cable that could lead to loss of load during cargo swing operations.

Jan 23, 2025

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2021-0282R1

[Correction] Tail Rotor — Tail Rotor Head Pitch Change Unit Bearing Spacer — Marking / Check

EASA Airworthiness Directive 2021-0282R1 is a correction to the original AD addressing the tail rotor head pitch change unit bearing spacer on Airbus Helicopters AS 350 and AS 355 models. It mandates inspections, marking, and checks of specific tail rotor head spider pitch change units to prevent loss of pitch change control. The directive applies to all serial numbers of the affected helicopter models and specifies part numbers 350A33-2030-00, 350A33-2167-00, and 350A33-2167-01.

Jan 8, 2025

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2023-0154R1

Stabilizers — Vertical Upper Fin Assembly — Inspections

EASA Airworthiness Directive 2023-0154R1 is an updated safety directive addressing inspections of the vertical upper fin assembly on Airbus Helicopters AS 355 series (E, F, F1, F2, N, NP). It mandates cleaning and repetitive inspections of the right-hand upper fin spar to detect structural cracks that could lead to in-flight separation of the fin and potential loss of control. The directive also references installation of a reinforced upper fin assembly as a terminating action for inspections.

Jul 19, 2024

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355

EASA AD 2012-0257-CN

CANCELLED: Tail Rotor — Laminated Half-Bearings — Inspection / Replacement

EASA Airworthiness Directive Cancellation Notice 2012-0257-CN cancels the previous EASA Emergency AD 2012-0257-E concerning inspection and replacement of laminated half-bearings on the tail rotors of Airbus Helicopters AS 350 and AS 355 models. This cancellation affects all serial numbers of AS 350 B, BA, BB, B1, B2, D, and most B3 helicopters except those with modification 075601, as well as AS 355 E, F, F1, F2, N, and NP helicopters. The directive addresses safety concerns related to premature failure of laminated half-bearings that could lead to tail rotor failure and loss of control in flight.

Jul 17, 2024

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2024-0139

Stabilizers — Vertical Fin — Inspection / Modification / Placards and Markings — Interior Placards — Installation / Aircraft Flight Manual / Airspeed Limitations — Amendment

EASA Airworthiness Directive 2024-0139 is an amendment addressing inspection, modification, and placard installation requirements for the vertical fin stabilizers of Airbus Helicopters AS 350 and AS 355 models. It applies to all serial numbers of AS 355 E, F, F1, F2, N, NP helicopters and AS 350 B3 helicopters except those with modification 073148 embodied in production. The directive mandates inspections, cleaning, flight manual amendments, placard installations, and introduces a reinforced upper fin assembly modification.

Jul 12, 2024

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2024-0134

Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment

EASA Airworthiness Directive 2024-0134 is an amendment addressing time limits and maintenance checks in the Airworthiness Limitations Section for Airbus Helicopters AS 355 series, including models E, F, F1, F2, N, and NP. It mandates compliance with updated maintenance tasks and life limits as specified in the latest Airbus Helicopters AS 355 Aircraft Maintenance Manual Chapter 04 revisions. The directive ensures continued airworthiness by enforcing new and more restrictive maintenance requirements.

Jul 10, 2024

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355

EASA AD 2024-0127

Tail Rotor Drive — Tail Rotor Drive Fan Wheel and Second Stage Impeller — Inspection / Replacement / Re-identification

EASA Airworthiness Directive 2024-0127 is an airworthiness directive applicable to Airbus Helicopters AS 355 E, F, F1, F2, and N models. It addresses the inspection, replacement, and re-identification of tail rotor drive fan wheels and second stage impellers with specific part numbers due to incorrect identification during production. The directive aims to ensure continued airworthiness and prevent potential loss of helicopter control.

Jul 3, 2024

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355Airbus Helicopters AS 355 EAirbus Helicopters AS 355 FAirbus Helicopters AS 355 F1Airbus Helicopters AS 355 F2Airbus Helicopters AS 355 N

EASA SIB 2023-11

Hand Fire Extinguisher (HFE) / Check of the absence of discharge of the HFE

EASA Safety Information Bulletin 2023-11 is an airworthiness bulletin addressing the Hand Fire Extinguisher (HFE) manufactured by L’HOTELLIER, part number 12085-01 (S262A10T1001), installed on various Airbus Helicopters models including AS 350, AS 355, EC 130, EC 155, SA 365, AS 365, EC 120, EC 175, SA 341, and SA 342. The bulletin highlights issues with HFEs manufactured before July 2022 that may have unintentional discharge due to production defects. It provides guidance on checking for absence of discharge to ensure firefighting capability is maintained.

Oct 24, 2023

Safety Information BulletinMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355Airbus Helicopters EC 120 BAirbus Helicopters EC175Airbus Helicopters SA 341Airbus Helicopters 342Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155

EASA AD 2023-0131

Doors — Sliding Doors — Modification

EASA Airworthiness Directive 2023-0131 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters AS 350 and AS 355 models equipped with sliding doors. It addresses a safety issue related to the upper rail roller of the sliding doors, which may lead to in-flight detachment of the door. The directive mandates modifications to the sliding door mechanism to enhance safety.

Jul 3, 2023

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA SIB 2023-06

Rupture of the Restraint System Buckle Cover

EASA Safety Information Bulletin 2023-06 is an airworthiness bulletin addressing the rupture of restraint system buckle covers on Airbus Helicopters AS 350 B2, AS 350 B3, AS 355 NP, and EC 130 T2 equipped with -198 series crew seats or -284 series passenger seats. The bulletin highlights reported occurrences of belt buckle ruptures manufactured by Anjou Aéronautique and provides safety recommendations to operators. It references Airbus Helicopters Safety Information Notice 3279-S-25 Revision 2 and SAFRAN SEATS Service Bulletin 198-25-009 Revision 1 for further guidance.

Jun 21, 2023

Safety Information BulletinMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2023-0089

SUPERSEDED BY EASA AD 2024-0139

EASA Airworthiness Directive 2023-0089 is an airworthiness directive affecting Airbus Helicopters AS 350 B3 and AS 355 series helicopters. It addresses inspection and maintenance requirements for the upper fin assembly to prevent potential in-flight separation due to cracks and fractured attachment screws. The directive includes amendments to flight manuals, placard installations, and inspection intervals to ensure continued airworthiness.

May 4, 2023

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355Airbus Helicopters AS 350 B3

EASA AD 2023-0075

SUPERSEDED BY EASA AD 2023-0089

EASA Airworthiness Directive 2023-0075 is issued for Airbus Helicopters AS 350 and AS 355 models, addressing cracks found in the upper fin spar and fractured attachment screws. This directive mandates inspections, cleaning, and amendments to the Rotorcraft Flight Manual (RFM) to include a reduced never-exceed speed (Vne) for affected helicopters. The directive applies to all serial numbers of AS 355 E, F, F1, F2, N, NP helicopters and AS 350 B3 helicopters except those with modification MOD 073148.

Apr 7, 2023

Airworthiness DirectiveMaintenanceFlight OpsSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2023-0064

Main Rotor — Pitch Rod Upper Links — Marking / Inspection

EASA Airworthiness Directive 2023-0064 is issued for Airbus Helicopters AS 350, EC 130, AS 355, AS 365, and SA 365 models. It addresses the main rotor pitch rod upper links, specifically the pitch rod lever axis attachment screws with Part Number 350A31-1873-20, requiring marking and inspection to detect loss of screw torque. The directive aims to prevent potential loss of control due to failure of these components.

Mar 20, 2023

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 2023-0044

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.

Feb 28, 2023

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Airbus Helicopters AS 355

EASA AD 2022-0220

Equipment / Furnishings — Main Rotor Flight Controls / Shear-Button Safety-Cap — Operational Check

EASA Airworthiness Directive 2022-0220 is an airworthiness directive issued by the European Union Aviation Safety Agency addressing the operational check of the main rotor flight controls' hoist shear-button safety-cap on Airbus Helicopters models AS 355, AS 365, SA 365, EC 155, AS 332, and EC 225 LP. The directive targets helicopters equipped with hoist provisions and focuses on ensuring the proper functioning of the safety-cap spring to prevent inadvertent activation of the hoist shear-button. It applies to specific collective pitch handles identified by part numbers listed in the directive.

Nov 16, 2022

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters AS 355Airbus Helicopters SA 330Airbus Helicopters AS 332Airbus Helicopters EC 225Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters AS355Airbus Helicopters AS365Airbus Helicopters SA365Airbus Helicopters EC155Airbus Helicopters AS332Airbus Helicopters EC225

EASA AD 2022-0180

Tail Rotor Drive — Fan Assembly — Inspection / Modification

EASA Airworthiness Directive 2022-0180 is an airworthiness directive addressing the tail rotor drive fan assembly on Airbus Helicopters AS 355 E, F, F1, F2, and N models. It mandates inspection and modification of specific right-hand and left-hand fan support parts to prevent failure. The directive applies to all serial numbers of these helicopter models and focuses on parts with certain part numbers prone to cracking or breaking.

Aug 29, 2022

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