NTSB 发现波音 737 门板上缺失的螺栓在飞行过程中脱落。 NTSB finds missing bolts on Boeing 737 door panel that fell off during flight.

美国国家运输安全委员会 (NTSB) 的调查人员发现，一架波音喷气式客机在上个月飞行途中爆炸之前，固定面板的螺栓缺失。 Investigators from the National Transportation Safety Board (NTSB) have found that bolts securing a panel on a Boeing jetliner were missing before it blew out during midflight last month. 根据周二公布的初步调查结果，阿拉斯加航空一架波音737客机在飞行过程中脱落，门板的门塞上没有安装螺栓。 According to preliminary findings released on Tuesday, the door panel on an Alaska Airlines Boeing 737 that fell off during flight had no bolts installed on the door plug. 该信息是从华盛顿州伦顿一家工厂的飞机照片中获得的。 This information was obtained from a picture of the aircraft in a factory in Renton, Washington.