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 180/36 Brake Line Adaptor 9/73 Applicability: Model 182 with S/Nos. 18261540 to 18262021. Requirement: Action in accordance with Cessna SL No. SE73-16. Compliance: Within 100 hours time in service after 28 September 1973.