▲调查发现,阿拉斯加航空是因缺少4颗螺栓,所以才导致了门板脱落的意外。
美国阿拉斯加航空一架波音737 Max
9在1月5日起飞不久后,一篇嵌入式门板突然在高空飞脱,导致机舱因气压问题,折返俄勒冈州波特兰国际机场紧急降落。国家运输安全委员会(NTSB)在2月6日发布相关事故的初步报告,证实飞机缺少了4颗将门板固定在机身上的关键螺栓。
综合外媒报导,NTSB在报告中展示了一张照片,显示机身上防止门板移位的4个螺栓中,有3个不翼而飞,而第4个螺栓的位置不明。调查人员表示,门板附近并无受损现象,显示飞机的4个螺栓早在起飞前就已全部丢失,所以才导致了门板在起飞过程中向上滑动,并从机身分离的事故。
▲阿拉斯加航空的门板飞脱事件可能与波音的供应商Spirit
AeroSystems有关。
报告也指出,由供应商Spirit
AeroSystems所安装的门塞,在抵达波音工厂时就有5颗铆钉损毁,导致波音的相关负责人不得不拆除4个螺栓,才能更换损坏的铆钉,不过NTSB暂时还未透露导致飞机门板在空中脱落的确切原因。
虽然报告特别在文件中点出了Spirit
AeroSystems的缺失,但波音公司的执行长上周承认,该公司必须对这起事故负责,「我希望每个人都了解,波音拥有这架飞机,也有着自己的供应链,所以这样的工作结果是属于波音的。」
这一事件加剧了人们对波音制造品质的质疑,而美国联邦航空管理局(FAA)也下令波音暂停生产737机型,直到FAA对其品质感到满意为止,「FAA现在正对波音及其主要供应商Spirit
AeroSystems的制造过程进行调查,我们现在要找出2个问题:Max 9到底出了什么错?波音的生产发生了什么事?」
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