COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Airparts (NZ) Ltd. FU 24 Series Aeroplanes AD/FU24/15 Main Landing Gear Axle Socket - Inspection 6/68 Applicability: All models except those fitted with disc brakes. Requirement: Inspect visually, the Main Landing Gear Axle Sockets, P/N 245101, for cracks across the lugs containing the lower links. Compliance: At intervals not exceeding 100 hours time in service.