COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beagle A109 (Airedale) Series Aeroplanes AD/BEA 109/1 Cooling Duct for Starboard Magneto 11/67 Applicability: All models. Requirement: Action in accordance with Beagle - Auster Mod. No. A105. Compliance: Forthwith.