The cowl flap thing might be some kind of relic text from another aircraft I guess. I dont remember what they had before but maybe a C206?
Pilot, as far as I read he had no IR-rating and it seems from other forums like most of the pilots flight time was some years back, not much recent. He was new on the diverdriver thing.
How would the Airvan handle in a power on stall ?
The pilot asked for higher climb ( due to clouds) and the data shows a climb with speed decreasing(down to or below stall speed) before the abrupt dive and change in direction.
There seems to be no recording available. The departure from controlled flight was somewhere around 1.25Nm before overhead and probably above clouds so they pergaps hadnt turned the cams on?