COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Transavia PL 12 Series Aeroplanes AD/PL 12/4 Stub Wing Structure - Inspection 12/68 Applicability: All models. Requirement: Inspect the stub wing leading edge tube for cracking in the vicinity of landing gear attachment. Compliance: Within 100 hours time in service after 14 February 1969 and thereafter at intervals not exceeding 100 hours time in service.