COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Partenavia P68 Series Aeroplanes AD/P68/16 Amdt 1 Engine and Engine Mount Attach Bolts 4/89 Applicability: P68, P68B, P68R, P68C, P68 Obs, P68-TC, and P68-TC Obs. Requirement: 1. Inspect the MS bolts attaching the engine to the engine mount and the MS bolts attaching the engine mount to the aircraft structure in accordance with Partenavia S.B. 76 Rev 1. 2. Check the nuts associated with the bolts in para 1 for correct torque loading. Compliance: 1. At each engine installation. 2. At intervals not exceeding 100 hours time in service. Background: This Amendment revises the original Australian Requirement to include recently published manufacturer's inspection criteria, and to expand the Applicability.