COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES DHC-3 (Otter) Series Aeroplanes AD/DHC-3/5 Booster Pump, Fuselage Former NK Cap Strips, Rear Cabin Seats Applicability: As detailed in Requirement Document. Requirement: Action in accordance with De H Canada TNS Otter Nos 22, 24 and 25. Note: Canadian AD 54-9 refers. Compliance: Forthwith.