Fatigue and Fracture in an Aircraft Engine Pylon

摘要

Separation of an engine from a 747-200 aircraft resulted in a catastrophic211u001eaircraft accident near Amsterdam. The engine separated, together with its pylon, 211u001eowing to fatigue and fracture of components connecting the pylon to the wing. 211u001eThese components were high strength steel lugs and two 'fuse pins'. One fuse pin 211u001ewas not recovered, but the other one and the lugs were investigated to find the 211u001emost probable cause and sequence of damage leading to separation.