Original Message

We cannot see exactly where the MV-22 was positioned in relation to the deck, but we can see that they had a crosswind. So I'd guess that in addition to all of the other factors (e.g. high g.w., excessive downwash?), that there was some interaction between the proprotors (and maybe even some FBW confusion) that caused that roll instability that we see just before the crash. I would bet that there are still some things that the big-brain guys don't know and cannot predict about how those proprotors work in every situation.