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Citing several unnamed sources, the WSJ reported that the results are the first to be uncovered based on data extracted from the black boxes of Flight 302.
The Ethiopian Minister of Transport later reiterated this point, saying the preliminary data retrieved from the crash black boxes in Ethiopia showed similarities with the Lion Air crash.
Ethiopian Airlines Flight 302 crashed on the morning of 10 March after taking off from Addis Ababa to Nairobi, Kenya, killing 157 people.
Lion Air Flight 610 crashed into the Java Sea in Indonesia on October 29, after taking off from Jakarta. The 189 people on board are dead.
The findings reported come from a preliminary report that the investigating authority must produce within 30 days of an incident. The findings are not final and are subject to change as the investigation continues.
If confirmed, the preliminary findings cited in the Wall Street Journal would suggest that the automated flight software known as the Maneuvering Characteristic Augmentation System (MCAS), installed in both aircraft, could be at the origin of both incidents.
The MCAS is a system that automatically lowers the nose of the aircraft when it receives information from its external attack angle sensors (AOA) indicating that the aircraft is flying too far slowly or too strongly and may stall.
Investigators also indicated whether the pilots had sufficient training with the system.
GebreMariam also stated that the flight simulator on which the pilots had been trained to learn to fly a Boeing 737 Max 8 did not reproduce the automated MCAS function studied by the accident investigators.
Transportation Secretary Elaine Chao said she found "very questionable" that safety systems are not part of Boeing's standard equipment for its 737 Max.
A Boeing official said on Wednesday that the company had conducted several "in-depth audits" since the Lion Air crash and that it "found" nothing about us. "
Gregory Wallace, David Shortell, Haley Byrd, Ralph Ellis, Oren Liebermann, Richard Quest and Masrur Jamaluddin, both of CNN.
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