COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 33 and 35-33 (Debonair/Bonanza) Series Aeroplanes AD/BEECH 33/18 Amdt 1 Landing Gear Shock Strut Piston 1/74 Applicability: All model F33A with S/Nos. CE-436 to CE-463 except CE-439 and CE-462. Requirement: Action in accordance with Beechcraft SI No. 0612-200. Compliance: Within 100 hours time in service after 31 January 1974 unless already accomplished.