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-23/59 Wing Rear Spar - Inspection 11/73
Applicability: All model PA-23-150 and PA-23-160 with S/Nos. 23-1 to 23-2046. Document: Piper SL No. 672.
Compliance: Within 100 hours time in service after 30 November 1973 and thereafter at intervals not exceeding one year.