COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Partenavia P68 Series Aeroplanes AD/P68/3 Amdt 1 Engine Mount - Inspection 4/79 Applicability: All models P68A and P68B. Document: 1. Partenavia SB No. 22; or 2. Registro Aeronautico Italiano AD No. 75-252/P68-10. Compliance: Unless already accomplished, initially inspect within 25 hours time in service after 23 February 1979 and thereafter at intervals not exceeding 100 hours time in service.