COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/HS 748/20 and issues the following AD under subregulation 39.1 (1) of CAR 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. British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes AD/HS 748/20 Amdt 1 Rear Pressure Bulkhead and Fin Attachment Fittings 8/2001 Applicability: All HS 748 aircraft. Requirement: Inspect in accordance with BAE Systems Mandatory Service Bulletin HS748-53-49 Revision 2. Note 1: UK CAA AD 002-03-83 refers. Note 2: The inspection of certain fuselage fin attachment fittings are required by AD/HS 748/19. Compliance: As specified in the Approval part of the Requirement document. This Airworthiness Directive becomes effective on 9 August 2001. Background: A structural audit carried out by British Aerospace indicated that the fin attachment fittings require regular inspections to ensure the continuing airworthiness of the HS 748 aircraft. Amendment 1 is issued in response to a revision of the Requirement document, which introduces the requirement to inspect other areas for fatigue damage while the fin is removed, and also to replace a number of items and return them to BAE Systems Regional Aircraft for detailed examination. Additionally, the revision provides clarification to repeat inspection instructions and the eddy current technique. David Alan Villiers Delegate of the Civil Aviation Safety Authority 3 July 2001 The above AD is notified in the Commonwealth of Australia Gazette on 11 July 2001. Page 1 of 1