AD/B737/7 - Fuselage Frames Adjacent to Forward Airstair
1AD/B737/7 - Fuselage Frames Adjacent to Forward Airstair
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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 737 Series Aeroplanes
AD/B737/7 Fuselage Frames Adjacent to Forward Airstair 8/85
Applicability: All model 737 aircraft, Line Numbers 1 to 880.
Requirement: 1. FAA AD 85-01-06, Amendment 39-4982, up to and including Section F, but excluding Section E.
- Boeing SB 737-53A1064, Revision 3. Compliance: As detailed in Requirement Document No 1.
Background: There have been numerous reports of cracking in the fuselage frames adjacent to the forward airstair doorway cut-out. Cracking of the frames and door cut-out internal doubler could result in a sudden loss of cabin pressure, and possibly blowout of the airstair door.