AD/S-76/48 Main Gearbox Lower Housing Jet Port Liners Cancelled (Cth)

AIRWORTHINESS DIRECTIVE

On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive AD/S-76/48.

Sikorsky S-76 Series Helicopters

AD/S-76/48 Main Gearbox Lower Housing Jet Port Liners 7/2009

Requirement:

CANCELLED.

This AD is cancelled on 2 July 2009.

Background:

This unique Australian AD raised in 1987 against Sikorsky Alert Service Bulletin (ASB) 76-66-11 required an inspection to ensure that all magnesium liners of the main gearbox lower housing oil pressure jet ports were correctly pinned.

Compliance was:  Within 50 hours TIS after 15 October 1987, inspect in accordance with Section 2 of the requirement document.

This AD has been sufficiently promulgated for the affected Helicopters to have been inspected by now; therefore this AD is considered to be no longer required.

James Coyne
Delegate of the Civil Aviation Safety Authority

18 May 2009