EASA Regulations for Airbus Helicopters AS 355 N

9 airworthiness directives and regulations affecting Airbus Helicopters AS 355 N.

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New ADs and bulletins for Airbus Helicopters AS 355 N, summarized like the ones below, every Monday.

EASA AD 2025-0159R1

Oct 19, 2026

Placards and Markings – Unlock Sliding Door – Installation

EASA Airworthiness Directive 2025-0159R1 is an updated regulatory requirement addressing the installation of safety placards and markings for unlocking sliding doors on Airbus Helicopters models AS 350, AS 355, EC 120, and EC 130. This directive applies to all serial numbers of these helicopters except certain EC 120 B models with specific serial numbers. The directive mandates the installation of additional safety labels to improve emergency exit instructions.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 350 B
  • Airbus Helicopters AS 350 B1
  • Airbus Helicopters AS 350 B2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters AS 350 BA
  • Airbus Helicopters AS 350 BB
  • Airbus Helicopters AS 350 D
  • Airbus Helicopters EC 130 B4
  • Airbus Helicopters AS 355
  • Airbus Helicopters AS 355 E
  • Airbus Helicopters AS 355 F
  • Airbus Helicopters AS 355 F1
  • Airbus Helicopters AS 355 F2
  • Airbus Helicopters AS 355 N
  • Airbus Helicopters AS 355 NP
  • Airbus Helicopters EC 120 B
  • Airbus Helicopters EC 120

EASA AD 2026-0128

Aug 3, 2026

[Correction] Engine Fuel & Control – Hydromechanical Metering Unit – Replacement

EASA Airworthiness Directive 2026-0128 is a corrective directive addressing the replacement of Hydromechanical Metering Units (HMUs) on SAFRAN Helicopter Engines ARRIUS 1A models, commonly installed on Airbus Helicopters AS 355 N twin-engine helicopters. The directive targets specific HMUs with part number 0164851170 identified as having a torn constant delta P valve diaphragm, which could cause fuel flow drift and potential engine shutdown. It mandates replacement of affected HMUs to ensure continued airworthiness and safe engine operation.

Airworthiness Directive
  • Safran ARRIUS 1
  • Airbus Helicopters AS 355 N

EASA AD 2026-0146

Jul 24, 2026

Equipment / Furnishings – Mechanical Dropping Control – Inspection

EASA Airworthiness Directive 2026-0146 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters AS 350 B2, AS 350 B3, AS 355 N, AS 355 NP, and EC 130 B4 models. The directive addresses inspection requirements for the mechanical dropping control system, specifically the dropping control part number 704A41811037, to prevent unintended load release during cargo operations.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355
  • Airbus Helicopters AS 350 B2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters AS 355 N
  • Airbus Helicopters AS 355 NP
  • Airbus Helicopters EC 130 B4

EASA AD 2026-0132

Jul 8, 2026

Rotors Flight Control – Upper Ball Bearing End of the Main Rotor Servo-Controls – Inspection

EASA Airworthiness Directive 2026-0132 is an airworthiness directive addressing the inspection of the upper ball bearing ends of the main rotor servo-controls on Airbus Helicopters AS 350 B3, AS 355 (F, F1, F2, N, NP), and EC 130 (B4, T2) models. The directive mandates a one-time and recurring inspection of the nut tightening torque on affected parts to prevent potential disconnection of the upper ball bearing end from the main rotor servo-controls. This AD applies to specific part numbers equipped with certain nut retainers and aims to ensure continued safe flight control operation.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters AS 355 F
  • Airbus Helicopters AS 355 F1
  • Airbus Helicopters AS 355 F2
  • Airbus Helicopters AS 355 N
  • Airbus Helicopters AS 355 NP
  • Airbus Helicopters EC 130 B4
  • Airbus Helicopters EC 130 T2

EASA AD 2024-0148

Jul 30, 2024

Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment

EASA Airworthiness Directive 2024-0148 is an amendment addressing the time limits and maintenance checks in the Airworthiness Limitations Section for SAFRAN Helicopter Engines ARRIUS 1A engines. These engines are commonly installed on Airbus Helicopters AS 355 N twin-engine helicopters. The directive mandates compliance with updated maintenance tasks and life limits to ensure continued airworthiness.

Airworthiness Directive
  • Safran ARRIUS 1
  • Airbus Helicopters AS 355 N

EASA AD 2024-0127

Jul 3, 2024

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.

Airworthiness Directive
  • Airbus Helicopters AS 355
  • Airbus Helicopters AS 355 E
  • Airbus Helicopters AS 355 F
  • Airbus Helicopters AS 355 F1
  • Airbus Helicopters AS 355 F2
  • Airbus Helicopters AS 355 N

EASA AD 2022-0180

Aug 29, 2022

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.

Airworthiness Directive
  • Airbus Helicopters AS 355
  • Airbus Helicopters AS 355 E
  • Airbus Helicopters AS 355 F
  • Airbus Helicopters AS 355 F1
  • Airbus Helicopters AS 355 F2
  • Airbus Helicopters AS 355 N

EASA AD 2010-0006-CN

Aug 20, 2021

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.

Agency Decision
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355
  • Airbus Helicopters AS 350 B
  • Airbus Helicopters AS 350 BA
  • Airbus Helicopters AS 350 BB
  • Airbus Helicopters AS 350 B1
  • Airbus Helicopters AS 350 B2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters AS 350 D
  • Airbus Helicopters AS 355 E
  • Airbus Helicopters AS 355 F
  • Airbus Helicopters AS 355 F1
  • Airbus Helicopters AS 355 F2
  • Airbus Helicopters AS 355 N
  • Airbus Helicopters AS 355 NP

EASA AD 2017-0020R1

May 22, 2019

Tail Rotor — Pitch Rod — Inspection

EASA Airworthiness Directive 2017-0020R1 is an updated safety directive addressing inspection requirements for the tail rotor pitch rod on Airbus Helicopters AS 350 and AS 355 models. It mandates repetitive visual inspections of the elastomeric ball-joint of the tail rotor pitch rod to detect damage that could lead to loss of helicopter control. The directive applies to all serial numbers of AS 350 B, BA, BB, B1, B2, B3 and AS 355 E, F, F1, F2, N, and NP helicopters incorporating specific modifications.

Airworthiness Directive
  • Airbus Helicopters AS 350
  • Airbus Helicopters EC 130
  • Airbus Helicopters AS 355
  • Airbus Helicopters AS 350 B
  • Airbus Helicopters AS 350 BA
  • Airbus Helicopters AS 350 BB
  • Airbus Helicopters AS 350 B1
  • Airbus Helicopters AS 350 B2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters AS 355 E
  • Airbus Helicopters AS 355 F
  • Airbus Helicopters AS 355 F1
  • Airbus Helicopters AS 355 F2
  • Airbus Helicopters AS 355 N
  • Airbus Helicopters AS 355 NP