EASA Regulations for Safran ARRIEL 2

12 airworthiness directives and regulations affecting Safran ARRIEL 2.

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New ADs and bulletins for Safran ARRIEL 2, summarized like the ones below, every Monday.

EASA AD 2026-0153

Jul 31, 2026

Time Limits / Maintenance Checks – Airworthiness Limitations Section – Amendment

EASA Airworthiness Directive 2026-0153 is an amendment addressing time limits and maintenance checks in the Airworthiness Limitations Section for SAFRAN HELICOPTER ENGINES ARRIEL 2 series engines. This directive applies to multiple ARRIEL 2 engine models installed on various helicopters including Airbus Helicopters AS 350 B3 (H125), EC 130 T2 (H130), MBB-BK117 D-2 (EC 145 T2 or H145), Sikorsky S-76C, Korea Aerospace Industries LAH and LCH, and AVIC AC312E helicopters. It mandates compliance with updated maintenance manuals and overhaul manuals to ensure continued airworthiness.

Airworthiness Directive
  • Safran ARRIEL 2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters EC 130 T2
  • MBB-BK117 D-2
  • Sikorsky S-76C
  • Korea Aerospace Industries LAH
  • Korea Aerospace Industries LCH
  • AVIC AC312E

EASA AD 2025-0079

Apr 10, 2025

Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment

EASA Airworthiness Directive 2025-0079 is an amendment addressing the time limits and maintenance checks in the Airworthiness Limitations Section for SAFRAN HELICOPTER ENGINES ARRIEL 2 series engines, including models 2D, 2E, 2H, 2L2, and 2N. These engines are commonly installed on helicopters such as Airbus Helicopters AS 350 B3 (H125), EC 130 T2 (H130), MBB-BK117 D-2 (EC 145 T2 or H145), Korea Aerospace Industries LAH and LCH, and AVIC AC312E. The directive mandates compliance with updated maintenance tasks and life limits to ensure continued airworthiness.

Airworthiness DirectiveSuperseded
  • Safran ARRIEL 2

EASA AD 2022-0261

Dec 20, 2022

Fire Protection — Fire Detectors — Replacement

EASA Airworthiness Directive 2022-0261 is an airworthiness directive addressing fire detector replacements on Airbus Helicopters AS 365 N3, EC 155 B, and EC 155 B1 models. It targets specific fire detectors with identified manufacturing non-compliance that may cause spurious engine fire warnings. The directive mandates replacement of affected fire detectors to ensure continued safe operation of these helicopters.

Airworthiness Directive
  • Airbus Helicopters SA
  • Airbus Helicopters AS 365
  • Airbus Helicopters EC 155
  • Safran ARRIEL 2
  • Airbus Helicopters AS 365 N3
  • Airbus Helicopters EC 155 B
  • Airbus Helicopters EC 155 B1

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 AD 2017-0102R2

Aug 29, 2022

Engine Fuel & Control — High Pressure / Low Pressure Fuel Pump Metering Unit — Inspection / Replacement

EASA Airworthiness Directive 2017-0102R2 is an updated regulatory requirement addressing inspection and replacement of the high pressure/low pressure fuel pump metering unit on SAFRAN Helicopter Engines ARRIEL 2 series engines. These engines are commonly installed on Airbus Helicopters AS 350 B3, EC 130 B4, and Changhe Z11 helicopters. The directive mandates inspections and modifications to prevent uncoupling of the LP fuel pump impeller and HP fuel pump shaft, which can lead to engine power loss or in-flight shutdown.

Airworthiness Directive
  • Safran ARRIEL 2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters EC 130 B4
  • Changhe Z11

EASA AD 2022-0083

May 11, 2022

Time Limits / Maintenance Checks – Airworthiness Limitations Section – Amendment

EASA Airworthiness Directive 2022-0083 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting SAFRAN Helicopter Engines ARRIEL 2 series engines, including models 2D, 2E, 2H, 2L2, and 2N. These engines are commonly installed on helicopters such as Airbus Helicopters AS 350 B3 (H125), EC 130 T2 (H130), MBB-BK117 D-2 (EC 145 T2 or H145), Korea Aerospace Industries LAH and LCH, and AVIC AC312E. The directive mandates compliance with updated airworthiness limitations and maintenance tasks as specified in the latest SAFRAN ARRIEL 2 maintenance manuals.

Airworthiness DirectiveSuperseded
  • Safran ARRIEL 2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters EC 130 T2
  • MBB-BK117 D-2
  • Korea Aerospace Industries LAH
  • Korea Aerospace Industries LCH
  • AVIC AC312E

EASA AD 2016-0004R1

Apr 22, 2022

Engine Fuel & Control — Hydro-Mechanical Metering Unit — Inspection

EASA Airworthiness Directive 2016-0004R1 is an updated regulation addressing inspection requirements for the Hydro-Mechanical Metering Unit (HMU) on SAFRAN Helicopter Engines ARRIEL 2D engines, commonly installed on Airbus Helicopters AS 350 B3 and EC 130 T2 models. The directive mandates repetitive inspections and, if necessary, replacement of HMU components to prevent low fuel pressure warnings and potential engine shutdowns. It excludes engines with the post-mod TU 231 HMU from inspection requirements.

Airworthiness Directive
  • Safran ARRIEL 2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters EC 130 T2

EASA AD 2020-0046

Mar 4, 2020

Engine Fuel & Control — Full Authority Digital Engine Control B / Digital Engine Control Unit — Inspection / Replacement

EASA Airworthiness Directive 2020-0046 is an airworthiness directive addressing SAFRAN Helicopter Engines ARRIEL 2C and 2S1 engines, commonly installed on Airbus Helicopters AS 365 N3 and Sikorsky S-76C helicopters. The directive focuses on inspection and replacement of Full Authority Digital Engine Control B (FADEC B) digital engine control units (DECUs) due to identified defects. It mandates replacement of affected FADEC B DECU units to ensure continued safe operation of the engines.

Airworthiness Directive
  • Safran ARRIEL 2
  • Airbus Helicopters AS 365 N3
  • Sikorsky S-76C

EASA AD 2019-0180

Jul 25, 2019

Engine Fuel & Control — Fuel Filter Pre-blockage Pressure Switch — Operational Check

EASA Airworthiness Directive 2019-0180 is an airworthiness directive addressing SAFRAN Helicopter Engines ARRIEL 2 series engines installed on various helicopters including Airbus Helicopters AS 350 B3, EC 130 B4, AS 365 N3, EC 155 B, and Sikorsky S-76C. The directive mandates operational checks and visual inspections of the fuel filter pre-blockage pressure switch to ensure proper functionality and prevent uncommanded engine shutdowns due to fuel contamination.

Airworthiness Directive
  • Safran ARRIEL 2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters EC 130 B4
  • Airbus Helicopters AS 365 N3
  • Airbus Helicopters EC 155 B
  • Sikorsky S-76C

EASA AD 2019-0110

May 21, 2019

Engine — Torque Conformation Box — Check

The document titled 'Engine — Torque Conformation Box — Check' is a technical directive concerning the SAFRAN HELICOPTER ENGINES: ARRIEL 2 engine model. It addresses inspection and verification procedures for the torque conformation box component to ensure engine reliability and safety. This directive is relevant for operators and maintenance organizations managing helicopters equipped with the ARRIEL 2 engine.

Airworthiness Directive
  • Safran ARRIEL 2
  • Safran Helicopter Engines Arriel 2

EASA AD 2018-0273

Dec 13, 2018

Time Limits / Maintenance Checks – Airworthiness Limitations Section – Amendment

EASA Airworthiness Directive 2018-0273 is an airworthiness directive issued by the European Aviation Safety Agency concerning SAFRAN Helicopter Engines ARRIEL 2D, 2E, and 2N models. It applies to these engines installed on Airbus Helicopters AS 350 B3 (H125), EC 130 T2 (H130), and MBB-BK117 D-2 (EC 145 T2 or H145) helicopters. The directive mandates compliance with updated airworthiness limitations and maintenance tasks as specified in the latest SAFRAN ARRIEL 2 Maintenance and Overhaul Manuals.

Airworthiness DirectiveSuperseded
  • Safran ARRIEL 2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters EC 130 T2
  • MBB-BK117 D-2

EASA AD 2007-0117-CN

Jan 24, 2018

CANCELLED: Engines Formerly Used by Non-Civil Operators — Civil Use

EASA Airworthiness Directive Cancellation Notice 2007-0117-CN cancels the previous EASA AD 2007-0117 concerning ARRIEL 2 series engines formerly used by non-civil operators such as military entities. These engines are installed on helicopters including Airbus Helicopters AS 350 B3, AS 365 N3, EC 130 B4, EC 155 B1, and Sikorsky S-76C models. The cancellation reflects a change in regulatory approach regarding the airworthiness of these engines for civil use.

Airworthiness Directive
  • Safran ARRIEL 2
  • Airbus Helicopters AS 350 B3
  • Airbus Helicopters AS 365 N3
  • Airbus Helicopters EC 130 B4
  • Airbus Helicopters EC 155 B1
  • Sikorsky S-76C