AD/A320/19 Amdt 1 Hydraulic Fire Shut-Off Valve (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) AD/A320/19 and issues the following AD under subregulation 39.001(1) of CASR 1998.  The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Airbus Industrie A319, A320 and A321 Series Aeroplanes

AD/A320/19 Amdt 1 Hydraulic Fire Shut-Off Valve 8/2010

Applicability:

Airbus A320, all models.

Requirement:

Inspect and/or modify subject aeroplanes in accordance with French Airworthiness Directive (AD) 91-152-019 (B).

Note:  French AD 91-152-019(B) refers to Airbus Industrie All Operators Telex Ref AOT 29-04 1 June 1991 Revision 1.

Compliance:

Remains unchanged as specified in the Requirement Document but with a revised effectivity date of 3 October 1991 for Australian registered aircraft.

This Amendment becomes effective on 16 April 2010.

Background:

This Directive has been issued in order to prevent a possible internal short circuit of some suspect hydraulic fire shut-off valve actuators.  The internal short circuit could lead to power supply circuit breaker popping out and in consequence the valve failing to close.

This amendment corrects a reference error to the DGAC AD.

The original issue of this Directive became effective on 3 October 1991.

Mike Higgins
Delegate of the Civil Aviation Safety Authority

8 April 2010