COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Partenavia P68 Series Aeroplanes AD/P68/40 Stabilator Torque Tube Attachment Shelves, Flap and Aileron Hinge Shelves Applicability: All Model P68 aircraft. Requirement: Action in accordance with Partenavia Mandatory Service Bulletin 91. Note: RAI AD 94-026 refers. 5/94 Compliance: At the next 100 hour inspection after 28 April 1994, and thereafter at intervals not to exceed one calendar year. Background: A case of corroded shelves was reported to the manufacturer.