COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Victa and A.E.S.L. Airtourer Series Aeroplanes AD/VAT/9 Aileron Mass Balance Attachment - Inspection 11/63 Applicability: Victa Airtourer 100 and 115 with S/Nos. 5 to 49 not incorporating Mods. B75 or B118. Document: Victa SB No. 18. Compliance: Inspect at intervals not exceeding 100 hours time in service, after 1 September 1971.