A: Causes of aircraft flight accidents fall into just 3 categories:
1: Something about the a/c "broke" (in the broadest sense,
including linkages not sufficiently connected)
2: Something about the pilot "broke" (again, in the broadest sense,
including natural failures of perception, which we call 'illusion.')
3: Something about the air was "broken" (again, broadly, especially
including vortices = turbulence).


I stick with my use of the term "uncontrolled" and since it appears
that neither the pilot nor the air were broken I choose 1) above as
most likely.

Mike