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 36/13 Flap Bracket 8/72 Applicability: All models which have achieved 1000 or more hours time in service. Requirement: Inspect flap actuator bracket and adjacent structure on LH and RH flaps for cracks or signs of distress. Compliance: Within 100 hours time in service after 31 August 1972 and thereafter at intervals not exceeding 300 hours time in service.