COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Piper PA-23 (Apache and Aztec) Series Aeroplanes
AD/PA-23/40
Amdt 1
Applicability: Model PA-23-250.
Front Spar - Inspection 11/70
Requirement: Inspect the inboard end of the lower flange of the front spar, P/N 16010, for cracking.
Compliance: At intervals not exceeding 100 hours time in service after 9 December 1970.