EASA Regulations for Airbus Helicopters AS 365 N3

7 airworthiness directives and regulations affecting Airbus Helicopters AS 365 N3.

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 AD 2021-0170

Tail Rotor — Double Bearing — Inspection / Replacement

EASA Airworthiness Directive 2021-0170 is an airworthiness directive addressing inspection and replacement requirements for double bearings with Part Numbers 704A33-651-245 or 704A33-651-246 installed on tail rotor gearboxes (P/N 365A33-6005-09) of Airbus Helicopters AS 365 N2, AS 365 N3, EC 155 B, EC 155 B1, and SA 365 N1 models. The directive mandates repetitive inspections of the tail rotor gearbox chip detector and sets replacement intervals for affected parts to prevent loss of yaw control. It applies to all serial numbers of the specified helicopter models.

Jul 19, 2021

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters AS 365 N2Airbus Helicopters AS 365 N3Airbus Helicopters EC 155 BAirbus Helicopters EC 155 B1Airbus Helicopters SA 365 N1

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 2019-0165-E

Tail Rotor Drive — Tail Rotor Gearbox — Inspection / Replacement

EASA Airworthiness Directive 2019-0165-E is an emergency directive addressing the tail rotor gearbox (TGB) inspection and replacement requirements for Airbus Helicopters SA 365 N1, AS 365 N2, AS 365 N3, EC 155 B, and EC 155 B1 models. The directive mandates a one-time inspection of the TGB housing recess and oil duct cover to detect oil retention or foreign objects that could impair lubrication and control. It applies to all serial numbers of the affected helicopter models.

Jul 12, 2019

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters SA 365 N1Airbus Helicopters AS 365 N2Airbus Helicopters AS 365 N3Airbus Helicopters EC 155 BAirbus Helicopters EC 155 B1

EASA AD 2018-0173-E

Equipment & Furnishings — Hoist Carrier Assembly — Inspection

EASA Airworthiness Directive 2018-0173-E is an emergency directive addressing inspection requirements for the Goodrich electrical hoist carrier assembly installed on Airbus Helicopters AS 332 L2, EC 225 LP, AS 365 N3, and EC175 B models. The directive mandates inspection of specific hoist part numbers to detect incorrect assembly that could lead to carrier assembly loosening and potential load loss. It applies to all serial numbers of the affected helicopter models and requires compliance with Airbus Helicopters Alert Service Bulletins.

Aug 8, 2018

Airworthiness DirectiveMaintenanceSafety MgmtAirbus Helicopters EC175Airbus Helicopters SA 330Airbus Helicopters AS 332Airbus Helicopters EC 225Airbus Helicopters SAAirbus Helicopters AS 365Airbus Helicopters EC 155Airbus Helicopters AS 332 L2Airbus Helicopters EC 225 LPAirbus Helicopters AS 365 N3Airbus Helicopters EC175 B

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