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 issues the following Airworthiness Directive (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. Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes AD/CL-600/61 Main Landing Gear Side-Brace Fitting Shaft 13/2002 Applicability: Model CL-600-2B16 aircraft, serial numbers 5301 through 5550. Requirement: Action in accordance with Bombardier Alert Service Bulletin A604-32-018, Revision 1, dated 22 February 2002. Note: Transport Canada AD CF-2002-43 refers. Compliance: For Paragraph 2.B. Part A of Requirement document: Within 3 months after 26 December 2002. For Paragraph 2.C. Part B of Requirement document: Within 5 months after 26 December 2002. For Paragraph 2.D. Part C of Requirement document: Within 5 months after 26 December 2002. This Airworthiness Directive becomes effective on 26 December 2002. Background: Transport Canada received two reports of fractures of the main landing gear side- brace fitting shafts on CL-604 aircraft. The fractures were caused by corrosion on the forward side of the side-brace fitting shafts. Although the fractured shafts did not become dislodged in either of the cases reported, breakage of a shaft could potentially result in collapse of a landing gear. David Alan Villiers Delegate of the Civil Aviation Safety Authority 8 November 2002 The above AD is notified in the Commonwealth of Australia Gazette on 4 December 2002. Page 1 of 1