The Ethiopian Airlines plane that crashed last month nosedived several times before it hit the ground.
A preliminary report has said pilots "repeatedly" followed procedures recommended by Boeing before the crash, according to the first official report into the disaster.
Despite their efforts, pilots "were not able to control the aircraft".
Flight ET302 crashed after take‑off from Addis Ababa, killing 157 people.
It was the second crash of a Boeing 737 Max aircraft in five months.
Last October, Lion Air flight JT 610 crashed into the sea near Indonesia killing all 189 people on board.
[Source: BBC]
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