美国联邦航空管理局(FAA)当地时间11日宣布对波音公司的质量控制问题展开调查。
FAA当日在一份声明中说,已正式通知波音,该机构正在进行一项调查,以确定波音是否未能确保公司的成品符合已获批的设计标准以及FAA的安全运行要求。FAA要求波音在10个工作日内做出答复,其中须说明内嵌式应急门掉落事故的“根本原因”以及该公司为防止问题再次发生而采取的措施。
5日晚,美国阿拉斯加航空公司一架波音737
MAX9型飞机因内嵌式应急门掉落紧急返回波特兰国际机场。FAA次日发布命令,要求所有由美国航空公司运营或在美国境内运营的波音737
MAX9型飞机暂时停飞,并接受安全检查。随后,全球多家监管机构和航空公司也宣布暂时停飞该型号飞机。
阿拉斯加航空8日说,公司技术人员的初步报告显示,部分波音737
MAX9型飞机上可见一些松动部件。美国联合航空公司当天也表示,执行FAA规定的紧急检查时,在公司运营的该型号飞机上发现一些松动的螺栓。
《纽约时报》11日报道称,美国国家运输安全委员会(NTSB)将调查掉落应急门的固定螺栓是否缺失或安装不正确。据美联社报道,波音11日表示,将充分、透明地配合FAA和NTSB的调查。
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