COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 180, 182 and Wren 460 Series Aeroplanes AD/CESSNA 180/46 Horizontal Stabiliser Rear Spar Flange 7/77 Applicability: All model 182 with S/Nos. listed in Requirement document. Requirement: Action in accordance with Cessna SL SE77-11. Compliance: Within 100 hours time in service after 31 July 1977.