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-23/57 Wing Leading Edge - Modification 6/73
Applicability: All model PA-23-250 with S/Nos. 27-4766 to 27-4820. Document: Piper SB No. 385.
Compliance: Within 100 hours time in service after 29 June 1973.