COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bell Helicopter Textron 205 Series Helicopters AD/BELL 205/28 Main Rotor Blade - Removal From Service 2/76 Applicability: All models 205A-1. Requirement: Remove from service main rotor blades having the following Serial Nos: A2-03642, A2-03643, A2-03646, A2-27872, A2-27961, A2-27963, A2-27967 A2-27968, A2-27982, A2-28015, A2-28016, A2-28019, A2-28020, A2-28023 A2-28195, A2-28198, A2-28211, A2-29315, A2-29325, A2-29334, A2-29915 A2-29919 and A2-29920. Compliance: Before further flight after 16 January 1976.