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E.No.927发动机在执行飞行任务时出现瞬时高温受热的异常现象,拆下该发动机进行了过热检查,发动机型号为JT9D—7R4E,一级涡轮动片的材料为PWA1480。
E.No.927 engine in the implementation of the mission instantaneous high temperature heating anomalies, removed the engine overheating inspection, the engine model JT9D-7R4E, a turbine rotor material is PWA1480.