Do we actually know the real reason he crashed. Was it mechanical or did he get into trouble in fog with no reference? I read somewhere his airspeed was down to zero knots.
1 (of 2) drive belt has broke.
Zero speed and altitude it were readings from his DeLorme inReach after he ditched. It was reason for starting the search operation and also they had last coords from inReach. If he was to recover inReach he would be able to send sms and new coords and would be found early, at the same day I think.