EASA Regulations for Safran ARRIEL 2

11 airworthiness directives and regulations affecting Safran ARRIEL 2.

EASA AD 2025-0079

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.

Apr 10, 2025

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2

EASA AD 2022-0261

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.

Dec 20, 2022

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Safran ARRIEL 2Airbus Helicopters AS 365 N3Airbus Helicopters EC 155 BAirbus Helicopters EC 155 B1

EASA SIB 2019-10R1

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.

Sep 21, 2022

Safety Information BulletinMaintenanceSafety MgmtAirbus Helicopters AS 350Airbus Helicopters EC 130Safran ARRIEL 2

EASA AD 2017-0102R2

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.

Aug 29, 2022

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2Airbus Helicopters AS 350 B3Airbus Helicopters EC 130 B4Changhe Z11

EASA AD 2022-0083

SUPERSEDED BY EASA AD 2025-0079

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.

May 11, 2022

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2Airbus Helicopters AS 350 B3Airbus Helicopters EC 130 T2MBB-BK117 D-2Korea Aerospace Industries LAHKorea Aerospace Industries LCHAVIC AC312E

EASA AD 2016-0004R1

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.

Apr 22, 2022

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2Airbus Helicopters AS 350 B3Airbus Helicopters EC 130 T2

EASA AD 2020-0046

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.

Mar 4, 2020

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2Airbus Helicopters AS 365 N3Sikorsky S-76C

EASA AD 2019-0180

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.

Jul 25, 2019

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2Airbus Helicopters AS 350 B3Airbus Helicopters EC 130 B4Airbus Helicopters AS 365 N3Airbus Helicopters EC 155 BSikorsky S-76C

EASA AD 2019-0110

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.

May 21, 2019

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2Safran Helicopter Engines Arriel 2

EASA AD 2018-0273

SUPERSEDED BY EASA AD 2022-0083

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.

Dec 13, 2018

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2Airbus Helicopters AS 350 B3Airbus Helicopters EC 130 T2MBB-BK117 D-2

EASA AD 2007-0117-CN

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.

Jan 24, 2018

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 2Airbus Helicopters AS 350 B3Airbus Helicopters AS 365 N3Airbus Helicopters EC 130 B4Airbus Helicopters EC 155 B1Sikorsky S-76C