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
AD/CL-600/4 Auxiliary Power Unit Load Control Valve - Special Check and Adjustment
Applicability: All models S/Nos. 1005 to 1008, 1010 to 1050, 1057 and 1058. Document: Canadair Challenger SB No. 600-0228.
Compliance: Prior to the issue of an Australian Certificate of Airworthiness.
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Background: A clearance check is required between the APU load control and the APU enclosure front panel. Interference between these components could cause sufficient local erosion to invalidate the fire containment capability of the APU enclosure.