COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 36 (Bonanza) Series Aeroplanes AD/BEECH 36/18 Amdt 1 Landing Gear Shock Strut Position 1/74 Applicability: All model A36 with S/Nos. E-425 to E-475 except E-431. Requirement: Action in accordance with Beechcraft SI No. 612-200. Compliance: Within 100 hours time in service after 31 January 1974 unless already accomplished.