EASA Regulations for Sikorsky S-76A

3 airworthiness directives and regulations affecting Sikorsky S-76A.

EASA AD 2017-0064R2

Engine Fuel & Control — Drain Valve Assembly — Inspection / Replacement

{ "summary": "EASA Airworthiness Directive 2017-0064R2 is an updated safety directive addressing fuel leaks from the drain valve assembly on SAFRAN Helicopter Engines ARRIEL 1 series engines, which are installed on various helicopter models including Airbus Helicopters AS 350 and AS 365 series, MBB-BK117, Leonardo A 109 K2, and Sikorsky S-76A. The directive mandates inspections, wrapping, and replacement of affected drain valves to prevent fuel leaks that could lead to engine fire or in-flight

Apr 19, 2018

Airworthiness DirectiveMaintenanceSafety MgmtSafran ARRIEL 1Safran Helicopter Engines ARRIEL 1Airbus Helicopters AS 350Airbus Helicopters AS 365MBB-BK117Leonardo A 109 K2Sikorsky S-76A

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