COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 747 Series Aeroplanes
AD/B747/118
Amdt 1
Cargo Doorway Fitting 14/98
Applicability: Model 747 series aircraft with line numbers 1 though 200; having 7079-T6 aluminium latch support fittings.
Requirement: Action in accordance with the technical requirements of FAA AD 98-18-23 Amdt 39- 10739.
Note: Boeing Alert Service Bulletin (ASB) 747-53A2377, ASB 747-53A2377 Revision 1, and ASB 747-53A2377 Revision 2 refer.
Compliance: As specified in the Requirement Document with a revised effective date of 31 December 1998.
This Amendment becomes effective on 31 December 1998.
Background: Reports were received of cracked fittings on two aircraft. Failure of latch support fittings could result in a cargo door opening during flight.
Amendment 1 is issued in response to a new FAA AD which requires accomplishment of the previously optional terminating action. The FAA received reports indicating that the repetitive inspections required by the existing AD may not detect cracked fittings in a timely manner.
The original issue of this Airworthiness Directive became effective on 27 May 1993.