The automatic system, which was supposed to prevent the aircraft from going into a dive, was flawed according to the Indonesian Committee for Transport Safety. The crash of this aircraft on 28 October 2018 left 189 people dead.

Defects in the design of the Boeing 737 Max flight control system played a key role during the Lion Air aircraft crash off Indonesia, which killed 189 people on October 28, 2018. said Friday the investigators.

"The design and certification of the MCAS," an automatic system that was to prevent the aircraft from going into a dive, "were unsuitable," said the national committee responsible for transport safety, in a report released Friday in Jakarta .

The 737 MAX crisis

A few months after the crash, an Ethiopian aircraft of the same model, which served as the link between Addis Ababa and Nairobi, also crashed, killing 157 people. All 737 MAXs have since been nailed to the ground.
A committee of the World Civil Aviation Authorities (JATR) recently found that the US Federal Aviation Agency (FAA) failed to properly assess the MCAS because it lacked engineers and expertise .

Boeing announced Tuesday the dismissal of its Commercial Aviation Division (BCA) chief, Kevin McAllister, the first executive since the onset of the crisis.