COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Avro Anson and Avro 19 Series Aeroplanes AD/ANSON/22 Mainplane Spar Boom Joints - Inspection 10/62 Applicability: Anson and Avro 19. Document: Avro TSB No. 88. Compliance: Inspection - Before issue of C of A and at intervals not exceeding 5 years. Bolt replacement - Before issue of C of A.