COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fokker F28 Series Aeroplanes AD/F28/53 Cargo Door Hinges 8/87 TX Applicability: All models. Requirement: 1. Remove forward, centre and aft cargo door hinges. 2. Remove hinge wire and disassemble hinge. 3. Inspect hinge lugs for corrosion and cracking. Compliance: Unless accomplished within the pat six months within 50 hours time in service after 9 June 1987. Background: The Department has received reports of intergranular corrosion and cracking of the cargo door hinges. In one case nearly half of the lugs were cracked.