COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Dornier DO-27 Series Aeroplanes AD/DO-27/8 Wing Fuselage Attachment - Inspection NK Applicability: All D0-27Q and H series not modified in accordance with Dornier TB no. 27-33. Document: Dornier TB No. 27-33. Compliance: Within 100 hours time in service after 15 April 1969 and thereafter at intervals not exceeding 100 hours time in service.