EASA Regulations for Sikorsky S-76C

8 airworthiness directives and regulations affecting Sikorsky S-76C.

EASA AD US-2020-15-17

Indicating / Recording System - Remote Data Acquisition and Display Units - Software Update

The Federal Aviation Administration's Airworthiness Directive 2020-15-17 addresses certain Sikorsky Aircraft Corporation Model S-76C helicopters equipped with specific remote data acquisition units (RDAU) part numbers 76450-01098-106, 76450-01098-107, or 76450-01098-109. This directive mandates software updates to the RDAU and, for some helicopters, the display unit (DU) software to correct inaccurate main gear box (MGB) indications during flight. The directive aims to enhance flight safety by ensuring accurate MGB data is displayed to flight crews.

Sep 3, 2020

Airworthiness DirectiveMaintenanceSafety MgmtSikorsky S-76Sikorsky S-76C

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 US-2019-19-12

Engine Fuel & Control - Engine Collective Position Transducer - Inspection

Airworthiness Directive 2019-19-12 is a final rule issued by the FAA addressing Sikorsky Aircraft Corporation Model S-76C helicopters equipped with Turbomeca Arriel 2S1 or 2S2 engines that have engine collective position transducers (CPT) part numbers 76900-01821-104 or 76900-01821-105 installed. This directive mandates inspections and potential replacement of the CPT to prevent failure that could lead to engine control issues. It updates and expands upon the previous AD 2018-10-07 by including an additional CPT part number.

Oct 8, 2019

Airworthiness DirectiveMaintenanceSafety MgmtSikorsky S-76Sikorsky 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 US-2018-10-07

SUPERSEDED BY FAA AD 2019-19-12

FAA Airworthiness Directive 2018-10-07 is a final rule addressing Sikorsky Aircraft Corporation Model S-76C helicopters equipped with Turbomeca Arriel 2S1 or 2S2 engines having engine collective position transducer (CPT) part number 76900-01821-104 installed. This directive requires inspections of the CPT to detect wear that has caused several momentary One Engine Inoperative (OEI) incidents. The AD aims to prevent unsafe conditions related to CPT wear that could lead to emergency landings.

Jun 11, 2018

Airworthiness DirectiveMaintenanceSafety MgmtSikorsky S-76Sikorsky S-76C

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

EASA AD US-2017-19-01

Rotorcraft Flight Control - Main Rotor (M/R) Servo Pushrod Assembly - Inspection

Federal Register Volume 82, Number 227, Airworthiness Directive 2017-19-01 is a final rule issued by the FAA addressing Sikorsky Aircraft Corporation Model S-76A, S-76B, S-76C, and S-76D helicopters. It mandates inspection and marking of the main rotor servo pushrod assemblies with specific part numbers to prevent failure. The directive aims to enhance flight safety by addressing a critical component failure risk.

Dec 15, 2017

Airworthiness DirectiveMaintenanceSafety MgmtSikorsky S-76Sikorsky S-76ASikorsky S-76BSikorsky S-76CSikorsky S-76D

EASA SIB 2012-19R1

Uncommanded Engine In-Flight Shutdown triggered by the Tachometer Box

EASA Safety Information Bulletin SIB No. 2012-19R1 addresses uncommanded engine in-flight shutdowns triggered by the tachometer box on Turboméca ARRIEL 1E2 and ARRIEL 1S1 engines. These engines are installed on Eurocopter Deutschland MBB-BK 117 C-1 and C-2 helicopters, as well as Sikorsky S-76A and S-76C series helicopters. The bulletin provides information on the issue and recommends modifications to improve tachometer box reliability and mitigate shutdown risks.

Jan 9, 2013

Safety Information BulletinMaintenanceSafety MgmtEurocopter Deutschland MBB-BK 117 C-1Eurocopter Deutschland MBB-BK 117 C-2Sikorsky S-76ASikorsky S-76C