AD/S-76/55 Amdt 1 Retention Bolt for Stationary Swashplate Expandable Pin 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-76/55 Amdt 1.

Sikorsky S-76 Series Helicopters

AD/S-76/55 Amdt 1 Retention Bolt for Stationary
Swashplate Expandable Pin 7/2009

Requirement:

CANCELLED.

This AD is cancelled on 2 July 2009.

Background:

This unique Australian AD raised in 1990 against Sikorsky Alert Service Bulletin (ASB) 76-67-38 required a modification by installation of a nut and bolt assembly in the stationary swashplate to prevent migration of the expandable pin assembly from its location.

Compliance was:  Before issue of an Australian Certificate of Airworthiness (CofA).

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

James Coyne
Delegate of the Civil Aviation Safety Authority

18 May 2009