联邦航空管理局(FAA)对波音的调查升级,将审查其生产线及供应链,借此判断公司制造737 MAX
9机型时,有否在各个环节上严格把关。波音承诺会与当局合作,国会方面则表示有意向FAA以及波音问责。
综合美联社及《华尔街日报》报道,FAA在12日表示,将了解波音本身及其供应商在生产过程中有否遵循品质检验程序,也会加强监控MAX
9出现的问题,甚至有意改变长久以来的传统,不再让生产商负责部分安全评估。FAA新任局长惠特克(Mike
Whitaker)透露,可能会聘用独立第三方机构负责这方面工作,与“技术性非营利组织”合作监督波音,其中一个目标是加强对机身供应商势必锐航空系统公司(Spirit
AeroSystems)的监管。
波音在回应声明中表示,公司正与调查人员合作,努力确保所有飞机符合安全要求,然后才让MAX 9重新投入服务。其实早在MAX 9
舱壁飞脱事故前,波音与FAA在2018、2019年已经备受质疑,当时737 MAX
8接连出现2宗严重空难,事后发现机型的自动飞行系统存在缺陷,因此有国会议员批评FAA只依靠厂商自我监管,无法严格控制飞机安全。这次出事后国会领袖再次批评FAA没有妥善履行职责,议员们将向波音及FAA问责。
而在调查方面,国家运输安全委员会(NTSB)与FAA正集中了解,MAX
9的嵌入式舱门与螺丝等连结部件是否安全。机队中包括这款型号的联合航空与阿拉斯加航空表示,检查后发现其他MAX
9飞机上亦有零部件松动,可见除了涉事飞机外,其他同型号飞机也有问题。
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