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/FU24/10 Fuel Sump Corrosion - Inspection 6/68 Applicability: All models fitted with fuel tank sump P/N 244810. Requirement: Remove the fuel sump, P/N 244810 from the aircraft and thoroughly inspect the interior and exterior for corrosion. Compliance: At intervals not exceeding 12 months.