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 180/37 Amdt 1 Wing Strut Attachment Strap 9/73 Applicability: All model 180 with S/Nos. 18052335 to 18052349 and all model 182 with S/Nos. 18261960 to 18262101 and 18262104. Requirement: Action in accordance with Cessna SL SE73-20 (Supplement No. 1). Compliance: Within 100 hours time in service after 24 September 1973.