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/FU24/2 Amdt 1 Structural Component - Corrosion - Inspection 7/68 Applicability: All models. Requirement: Inspect fuselage longerons, centre wing, main and rear spars, wing attachment fittings and other major structural components for signs of corrosion and effect any necessary repairs. Note: This inspection will involve dismantling the aircraft as it is not provided with sufficient inspection panels to complete inspection of the main structure. Compliance: At intervals not exceeding 3 years for aircraft engaged in agricultural operations. At intervals not exceeding 5 years for aircraft engaged in operations other than agricultural.