Ethiopian 737 pilots followed Boeing guidelines before crash: WSJ
SEE ALSO :American Airlines extends Boeing 737 MAX cancellations for fourth time
They then switched the system back as they tried to find other ways to control the jet before it crashed, the newspaper added. Its sources said "the latest details are based on data downloaded from the plane's black-box recorders". The preliminary report on the accident will likely be issued this week, the Ethiopian government has said. The MCAS is believed to have been a key factor in both 737 MAX crashes. It is designed to automatically lower the aircraft's nose if it detects a stall or loss of airspeed. Before it crashed, the pilots of the Lion Air 737 MAX struggled to control it as the MCAS repeatedly pushed the plane's nose down, according to its flight data recorder.SEE ALSO :Father whose family died in Ethiopian plane crash to brief Congress
Both the Lion Air and Ethiopian planes -- MAX 8 models -- reportedly experienced erratic steep climbs and descents, as well as fluctuating airspeeds, before crashing shortly after takeoff. Ethiopia has said there were "clear similarities" in the two crashes. Boeing last week gathered hundreds of pilots and reporters for a presentation on proposed MCAS changes -- including the system no longer repeatedly making corrections when pilots try to regain control. The company is anxious to win approval for a remedy that could get the planes back in the air. But the US Federation Aviation Administration (FAA), which faced harsh questioning last week at a congressional hearing regarding its oversight of Boeing, said it expected the plane maker to submit the proposed fix "over the coming weeks" after it undertakes additional work.SEE ALSO :Boeing to change 737 MAX flight-control software to address flaw
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