Evidence of fatigue cracking has been discovered in the fractured high-pressure turbine disk from the GE Aviation CF6 engine that suffered an uncontained failure on an American Airlines Boeing 767-300 a week ago. American flight 383 suffered the engine failure during takeoff from Chicago O’Hare Oct 28. A majority of the right engine’s second-stage high-pressure turbine disk was recovered, the US National Transportation Safety Board (NTSB) says in a Nov. 4 investigative update. ...

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