.....hmm. I have done many stalls in the Airvan. It is benign, often there is no nose drop at all and it will just mush down. It can be quite difficult on a check ride or a C of A to be sure it has stalled until a noticeable rate of descent is indicated. Also it is very hard to get the cg out of forward limit and a pile of pax behind the two front seats would not do it. Furthermore, the seat backs are pretty substantial. They are higher than ie a 206. Of course it would still be possible in extremis for a pax to come over the top of one at shoulder level and there is also a gap between the seats that a person can climb through. However I really don't think the above scenario is at all likely to be caused by the non-event that is a stall in an Airvan.