Ethiopian investigators on the ground have found the plane’s screwjack on the stabiliser mechanism of the flight ET302 crash site.
According to investigation analyst, it indicates that the trim set was in an unusual position, similar to that of a Lion Air MAX8 plane that crashed last year.
The trim position of the stabilizer, could help to determine whether or not the plane’s nose was on pitch down position for a steep dive.
Also the satellite-based system flight tracking system revealed similar trajectories on the two flights, is what made FAA to ground the MAX fleet.
The following chart shows the first three minutes of each flight before crash. Lion air flew for 12 minutes and Ethiopian flew for 6 minutes before crash.
Charts curtesy: Seattle times