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Printed page label not indexed. PDF page 36.
inflicted by debris would therefore have had the capacity to reduce the tailplane's structural integrity by passing through the light gauge skins and spar web into the interior of the aft torque box, damaging the shear connection between top andOpen official document at PDF page 36AAIB Aircraft Accident Report 2/90: Boeing 747-121 N739PA, Lockerbie
Printed page label not indexed. PDF page 51.
The initial explosion triggered a sequence of events which effectively destroyed the structural integrity of the forward fuselage. Little more then remained between stations 560 and 760 (approximately) than the window belts and the cabin sidewall structure imediately abOpen official document at PDF page 51AAIB Aircraft Accident Report 2/90: Boeing 747-121 N739PA, Lockerbie
Printed page 47. PDF page 55.
known feature of early Boeing 747 aircraft which, by itself, does not detract from the structural integrity of the hull. The cold bond adhesive was used to improve the distribution of shear load across the joint, thus reducing shear transferOpen official document at PDF page 55AAIB Aircraft Accident Report 2/90: Boeing 747-121 N739PA, Lockerbie
Printed page label not indexed. PDF page 56.
beyond the boundary of the petalled region resulted in a critical reduction of fuselage structural integrity. Calculations were carried out at the Royal Aerospace Establishment to determine whether these fractures, growing outwards from the boundary of the petalled hole, cOpen official document at PDF page 56AAIB Aircraft Accident Report 2/90: Boeing 747-121 N739PA, Lockerbie
Printed page 54. PDF page 62.
explosion. The combined effect of the direct and indirect explosive forces was to destroy the structural integrity of the forward fuselage, 54Open official document at PDF page 62AAIB Aircraft Accident Report 2/90: Boeing 747-121 N739PA, Lockerbie
Printed page 56. PDF page 64.
explosion. The combined effect of the direct and indirect explosive forces was to destroy the structural integrity of the forward fuselage. 56Open official document at PDF page 64AAIB Aircraft Accident Report 2/90: Boeing 747-121 N739PA, Lockerbie