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/A320/112 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/A320/112 Amdt 1 MLG Door Actuator Fitting 3/2005 Applicability: All Model A319, A320, and A321 aircraft, without Airbus modification 30355 or 31362 incorporated in production or Service Bulletin A320-53-1158 incorporated in service. Requirement: Action in accordance with the requirements of DGAC AD F-2004-189 R1. Compliance: As specified in the Requirement document, with a revised effective date of 17 March 2005. This Amendment becomes effective on 17 March 2005. Background: The DGAC received a report of a main landing gear (MLG) door failing to close during flight on an A320 aircraft. Investigation revealed the MLG door actuator fittings installed on the keel beam, and the related strap, were cracked. Amendment 1 is issued in response to a new DGAC AD, which introduces new requirements for the MLG door actuator fittings inspection, and mandates inspection of the keel beam uppermost fastener holes. David Punshon Delegate of the Civil Aviation Safety Authority 4 February 2005