Originally Posted by
procede
They probably confirmed that the aircraft has had to come down in a near vertical nose down attitude, similar to the Lion air case.
Surely that was obvious from the first photos of the crash site on day one; the very limited debris field and massive disintegration of the fuselage made it obvious that the a/c hit the ground at not far off 90 degrees to the perpendicular, at high speed considerably in excess of terminal velocity.
There's possibly some other preliminary data and/or information we're not aware of (yet)? Or perhaps it's what they
haven't found at the crash site - eg no sign of other causes?