AD/S-76/22 Main Rotor Control Servo Actuators Inspection for Balance Tube Passage 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-76/22.

Sikorsky S-76 Series Helicopters

AD/S-76/22 Main Rotor Control Servo
Actuators - Inspection for
Balance Tube Passage 7/2009

Requirement:

CANCELLED.

This AD is cancelled on 2 July 2009.

Background:

This unique Australian AD raised in 1982 against Sikorsky Alert Service Bulletin (ASB) 76-67-14A required an inspection of the main rotor control servo actuators of Helicopters that were previously inspected to ASB 76-67-14 due the possible omission of a passage in the oil servos oil return system.

Compliance was:  Within 30 hours TIS after 28 April1982.

This AD has been sufficiently promulgated for the affected aircraft 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