COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Short SC7 (Skyvan) Series Aeroplanes AD/SC7/8A Flap Control Mechanism - Inspection and Lubrication 11/72 Applicability: All series 3, 3A and 3M. Document: Short Alert SB No. 27-56A. Compliance: Within 25 hours time in service after 24 November 1972, unless already accomplished within the preceding 6 months, and thereafter at intervals not exceeding 600 hours time in service or 6 months whichever occurs first.