波音公司表示，上个月发现部分737 MAX飞机存在一项软件故障，可能影响某些着陆程序。目前，该制造商正寻求联邦政府批准其最畅销飞机系列中的第四款、也是最后一款机型。
Boeing said it flagged a software glitch last month on some 737 Max aircraft that could affect certain landing procedures, as the manufacturer seeks federal approval for the fourth and final model in its best-selling aircraft family.
美国联邦航空管理局（FAA）周六表示，正在评估这一问题，“如果发现安全隐患，将立即采取行动”，并将对波音提出的修复方案进行审查。
The Federal Aviation Administration said Saturday that it is assessing the problem and "will take immediate action if it identifies a safety concern" and that it will review Boeing's proposed fix.
波音称，当飞行员在复飞后改变预先设定的飞行航径时，可能会出现这一问题；在随后的进近过程中，飞行员必须采取额外步骤，才能使用自动化工具。
Boeing said the issue could arise after a missed approach when pilots alter a preprogrammed flight path, and that pilots must take additional steps to use automated tools on subsequent approaches.
波音表示：“我们已向运营商通报相关信息，重申了飞行员为安全处置此类情况而应遵循的现有程序。我们的工程师正在开发一项软件更新，以永久解决这一问题。”《华尔街日报》此前报道了这一问题。
"We shared information with operators that reinforced existing pilot procedures for safely handling such cases. Our engineers are working on a software update to permanently address the issue," Boeing said. The Wall Street Journal reported the issue earlier.
该公司表示，飞行员均接受过在不使用自动化系统的情况下着陆的训练。波音称：“如果出现这种情况，我们正与航空公司直接合作，制定一项标准程序，使飞行员能够重新启用自动垂直导航功能。”
The company said that pilots are trained to land without the automated system. "We are working directly with airlines to formalize a procedure that will allow pilots to reenable automated vertical navigation should this situation occur," Boeing said.
美国各航空公司告诉CNBC，其机队中没有安装涉事更新软件的Max 8和Max 9飞机。部分MAX飞机可以回退至旧版软件。
U.S. airlines told CNBC that they do not have Max 8 and Max 9 airplanes with the updated software tied to the glitch in their fleets. Airlines can revert some Maxes to the older software version.
全机队均采用波音737 MAX的航空公司西南航空表示，公司“知悉这一问题，并正与波音和FAA就此事密切沟通”。
All-Boeing 737 Max carrier Southwest Airlines said it is "aware of the issue and is engaged with Boeing and the FAA."
它还表示，“我们的机队中没有任何飞机安装U.14版本，包括新交付的Max 8飞机。”美国联合航空也表示，不会接收任何安装新软件的MAX飞机。
It added that "none of our fleet is equipped with Version U.14, including new deliveries of Max 8 airplanes." United Airlines also said it's not taking any Max aircraft deliveries with the new software.
不过，另外两款机型Max 7和Max 10仍存疑。美国联邦航空管理局于8月初将Max 7认证为Max系列中体型最小的飞机，认证时飞机安装了最新软件。目前尚不清楚，这些飞机能否交付，或能否搭载旧版软件飞行。
However, questions remain about the two other models, the Max 7 and Max 10. The Federal Aviation Administration certified the Max 7 the smallest of the Max family, in early August with the newest software installed. It wasn't immediately clear if the aircraft could be delivered or fly with an older version of software.
此外，波音公司首席执行官凯利·奥特伯格（Kelly Ortberg）本月早些时候告诉投资者，他预计FAA（美国联邦航空管理局）将“很快”对Max 10机型进行认证。这一问题的出现，是在波音Max系列飞机因安全和制造危机而经历多年延误之后，其中包括2018年和2019年两起Max 8飞机致命空难，共造成346人遇难。一个存在缺陷的飞行控制系统软件——该系统此后已得到更新——被认定与这两起空难有关。
Additionally, Boeing CEO Kelly Ortberg told investors earlier this month that he expected FAA certification of the Max 10 "very soon." The issue comes after years of delays of Boeing's Max planes following safety and manufacturing crises, including the two deadly crashes of Max 8 aircraft in 2018 and 2019 that killed 346 people. A flawed flight control software system — which has since been updated — was implicated in both crashes.
根据Cirium的数据，目前全球共有2430架Max系列飞机在役。
There are 2,430 Max aircraft currently in service globally, according to Cirium.
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