Originally Posted by
threemiles
If the CVR is not found we will probably never know.
But there was also the AMP on board, maybe on the flight deck, maybe not, maybe to find out the root cause of the stick pusher and trim down after the AOA exchange before the flight before did not help. In that case though, what happened right after flaps up would have been expected by the crew, and not using trim cut out would have been by intention. Test flight with a full pax load, hard to believe, but ...
Excellent [possible] suggestion. it is entirely possible that they were aware of what would happen at flaps up - and were managing the trim while trying to diagnose. Then something went awry. Entirely possible explanation. CVR . . . .