AD/HU 369/36 Flexible Hose Assembly Replacement 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/HU 369/36.

McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters

AD/HU 369/36 Flexible Hose Assembly - Replacement 6/2009

Requirement:

CANCELLED.

This AD is cancelled on 4 June 2009.

Background:

This unique Australian AD raised in 1979 against Hughes Service Information Notice (SIN) No. DN-34 required a modification to replace the engine oil cooler to engine oil tank return hose with a longer hose assembly to reduce the possibility of vibration induced damage to oil tank or oil cooler assemblies.

Compliance was:  As detailed in the requirement document; which was within next 100 hours of helicopter operation after receipt of parts.

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

This AD has been reviewed in accordance with the AD review program.  The AD required a modification that has been sufficiently promulgated.  This AD is therefore cancelled.

James Coyne
Delegate of the Civil Aviation Safety Authority

24 April 2009