23:46 GMT04 August 2021
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    WASHINGTON (Sputnik) - The two 737 MAX aircraft that crashed in October 2018 and March 2019 killing more than 330 people both lacked two vital safety features for which manufacturer Boeing charged extra, the New York Times reports said on Thursday.

    The two features were a "patch" upgrade to the Maneuvering Characteristic Augmentation System (MCAS) placed to prevent stalls in flaps-retracted, low-speed, nose-up flight and a disagree light that warned about the erroneous readings, the New York Times said in a report.

    One aviation analyst told the newspaper that the two items were crucially important to aircraft safety and cost almost nothing to install.

    READ MORE: Air Force One Scrutiny Ordered in US as Boeing in Hot Water — Report

    However, neither feature was mandated to install by the US Federal Aviation Administration (FAA), the media outlet noted. The angle of attack indicator will remain optional for airliners operating the aircraft to purchase, the report added.

    READ MORE: Captain on Boeing 737 Max: Pilots Were Fighting Against Aircraft System

    All 737 MAX 8 aircraft have been grounded and Boeing is going to upgrade the MCAS software and make the disagree warning light also standard equipment on them, the report said, citing an anonymous source.

    READ MORE: Canadian, European Regulators to Hold Independent Reviews of Boeing 737 MAX

    US Federal Aviation Administration, Boeing, Boeing 737 MAX, Plane crash
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