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Home / US / Automatic anti-stall system activated before the crash of Ethiopian Airlines: Report

Automatic anti-stall system activated before the crash of Ethiopian Airlines: Report



Citing several unnamed sources, the WSJ reported that the results were the first on the basis of data retrieved from Flight 302 black boxes.

Earlier this month, the Federal Aviation Administration had grounded all Boeing 737 Max aircraft. It noted similarities between the crash of the Ethiopian Airlines and the crash of Lion Air in Indonesia six months ago.

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

57 people on board.

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.

In the Lion Air In a crash, the MCAS pushed the nose of the aircraft down more than 24 times before it finally came into contact with water. This was the result of a preliminary investigation by the Indonesian National Road Safety Safety Committee, where the system also responded to a faulty sensor.
  Pilot: Can pilots trust Boeing again?

Investigators have also pointed out whether the pilots were sufficiently trained with the system.

According to Ethiopian Airlines CEO Tewolde GebreMariam, pilots switching from older 737 models to the Boeing 737 Max 8 only had to complete a short, Boeing-prescribed, computer-based training program approved by the FAA.

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.

Southwest and American aviation unions' spokespersons said the self-governing course – one pilot told CNN that he was recording his iPad – highlighted the differences between the Max 8 and the older 737, but did not explain the MCAS rating. Function.
On Wednesday, Boeing introduced a redesign of the software system and pilot training from its 737 MAX level.
  Ethiopian Airlines is a symbol of national pride. Now a disaster has put it to the test

Gregory Wallace, David Shor Tell Haley Byrd, Ralph Ellis, Oren Lieberman, Richard Quest and Masrur Jamaluddin have contributed.


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