A Boeing bulletin to 737 MAX operators warns that erroneous angle-of-attack (AOA) data trigger automatic nose-down inputs and emphasizes that pilots must follow specific flight crew operations manual procedures to keep the aircraft from descending uncommanded. The flight crew operations manual (FCOM) bulletin stems from the probe into the Oct. 29 crash of a Lion Air 737 MAX 8, Boeing said. The crash was the first by a MAX aircraft. Lion Air flight JT610 departed Jakarta at 6:20 a.m. on ...

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