AD/B747/49 - Vertical Fin Access Cover Installation
1AD/B747/49 - Vertical Fin Access Cover Installation
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text 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.