(CNN) Investigators have completed their preliminary report into the crash of Ethiopian Airlines Flight 302 that crashed six minutes after takeoff from Addis Ababa on a flight to Nairobi on March 10. The report shows how the two pilots battled the Boeing 737 Max 8's automated flight control systems almost from the start of the flight.

Despite following Boeing's safety procedures, they were unable to regain control of the aircraft, investigators found, and the plane crashed into the ground, killing everyone on board.

The final report will take about a year to complete.

Here's the full preliminary report: