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How flawed software, high speed, other factors doomed an Ethiopian Airlines 737 MAX

Ethiopian police officers walk past the debris of Ethiopian Airlines Flight ET 302 plane crash near the town of Bishoftu, near Addis Ababa, Ethiopia March 12, 2019.

Minutes after take-off, the pilots of an Ethiopian Airlines 737 MAX were caught in a bad situation.

As soon as the pilots retracted the flaps and slats, according to flight data, a key sensor began to feed faulty information into Boeing’s Maneuvering Characteristics Augmentation System (MCAS), designed to prevent stalls.

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