The throng of spectators, including famed airplane designer Sir Geoffrsey de Havilland ... Yoke Peter’s reassembled pieces pointed to metal fatigue. But why? Pressurization was the leading ...

However, the first commercial plane, the de Havilland Comet, broke apart mid-flight in 1953. Then it happened again in 1954. The reason was determined to be the metal fatigue that came from the ...