COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 50 (Twin Bonanza) Series Aeroplanes AD/BEECH 50/26 Nacelle Interior Fire Seal 2/74 Applicability: Model E50 with S/Nos. EH-1 to EH-70. Model F50 with S/Nos. FH-71 to FH-96 except FH-94; Model G50 with S/Nos. GH-94, GH-97 to GH-119; Model H50 with S/Nos. HH-120 to HH-149; Model J50 with S/Nos. JH-150 and on. Requirement: Install Beech Nacelle Interior Fire Seal Kits P/N 65-9008-1. Compliance: Within 100 hours' time in service after 30 September 1974.