Citing several unnamed sources, the WSJ reported that the results were the first on the basis of data retrieved from Flight 302 black boxes.
The Ethiopian Transport Minister repeated this point later, saying that preliminary data recovered from the black boxes of the Ethiopian crash would have been similar to the crash of the Lion Air. Ethiopian Airlines' Flight 302 crashed on the morning of March 10, after he had picked up Addis Ababa on his way to Nairobi, Kenya, killing all 1
Lion Air Flight 610 crashed into Java Sea in Indonesia on October 29 after launching from Jakarta. All 189 people died on board.
The reported results are from a preliminary report that must be prepared by the investigating authority within 30 days of an incident. The findings are not definitive and may change during the course of the investigation.
If confirmed, the preliminary findings quoted in the Wall Street Journal suggest that the automated flight software called the Maneuvering Feature Enhancement System (MCAS) installed on both aircraft was responsible for the two incidents.
The MCAS is a system that automatically lowers the nose of the aircraft when it receives information from its external angle of attack sensors (AOA) that the aircraft is flying too slowly or too steeply and that there is a risk of stalling.
Investigators have also pointed out whether the pilots were sufficiently trained with the system.
GebreMariam also The flight simulator the pilots trained to learn the Boeing 737 Max 8 aircraft did not replicate the automated MCAS function that the crash investigators questioned.