COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes
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.
AD/CL-600/42 Lower Wing Plank 8/2001
Applicability: Model CL-600-2B19 aircraft, serial numbers 7003 through 7999. Requirement: Perform a detailed visual inspection of the left and right wings at rear spar WS
148.019 in accordance with Part 2 of the Accomplishment Instructions of Bombardier
Alert Service Bulletin A601R-57-031, dated 22 March 2001. If cracks are found, repair before further flight.
Note: Transport Canada AD CF-2001-15 refers.
Compliance: Initially, in accordance with the following schedule:
- For aircraft that have accumulated 6,500 total flight cycles or less at 9 August 2001; before exceeding 7,000 total flight cycles; and,
b. For aircraft that have accumulated more than 6,500 total flight cycles but not more than 13,500 total flight cycles at the effective date of this Directive; within 500 flight cycles after 9 August 2001 or before accumulating 13,700 total flight cycles, whichever occurs first; and,
c. For aircraft that have exceeded 13,500 total flight cycles at 9 August 2001; within 200 flight cycles after 9 August 2001.
Subsequently, repeat at intervals not to exceed 5,000 flight cycles. This Airworthiness Directive becomes effective on 9 August 2001.
Background: Cracks on the left and right hand sides of the lower wing plank at wing station 148 have been discovered on a number of in-service aircraft. Failure of the lower wing plank would compromise the structural integrity of the wing.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 26 June 2001
The above AD is notified in the Commonwealth of Australia Gazette on 11 July 2001.