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AFP / Getty
The French BEA has published a photo of one of the black boxes found on the Ethiopian Airlines accident site.
Boeing will launch a 737 Max ground-level software upgrade in the coming weeks, following the crash of Ethiopian Airlines, which claimed the lives of 157 people.
The US planner expects the US Federal Aviation Administration to approve the software design changes "by April 2019" at the latest.
Boeing began work on improvements after the crash of another 737 Max in October.
Countries around the world have grounded Boeing 737 Max 8 and 9 jet planes.
An Ethiopian delegation joined investigators in Paris to unveil the cause of the Boeing 737 Max accident Sunday.
The French Bureau of Investigation and Analysis of Civil Aviation Safety (BEA) received Thursday flight data recorders and voice recorders in the badpit.
The software that Boeing plans to implement includes updates to the maneuver feature augmentation system.
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This is the 737 Max's automatic anti-stall system designed to prevent the plane from landing.
It prevents the aircraft from pointing upwards at too high an angle, where it could lose its lift.
However, pilots reported that the system tipped the nose of the aircraft a few minutes after takeoff, forcing them to intervene to prevent the plane from taking off.
The FAA has stated that the Boeing 737 will not fly until a software update can be tested and installed.
The BEA has taken charge of the black boxes of the Ethiopian Airlines planes, but a spokesman said the initial tests could last between half a day and several days, depending on the condition of the boxes.
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