COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES DHC-2 (Beaver) Series Aeroplanes AD/DHC-2/11 Aileron Hinge Arm - Inspection 3/65 Applicability: All models with aileron hinge arms having more than 3000 hours time in service. Document: Hawker de havilland TNS DHC-2 Aust. No. 3. Compliance: At intervals not exceeding 200 hours time in service.