COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 747 Series Aeroplanes
AD/B747/49 Vertical Fin Access Cover Installation 6/86
Applicability: All models with line numbers to 625.
Requirement: Action in accordance with Boeing SB 747-53A2264.
Note: FAA AD 86-08-02 refers.
Compliance: Prior to 30 November 1986.
Background: The FAA has determined that the vertical fin could be over pressurised to the point of structural failure in the event of failure of the aft pressure bulkhead.