Originally Posted by
SASless
Care to expound upon your post to clarify your observation which in general I fully agree with but I am still waiting for information that points me to the root cause and originator of the process that caused the aircraft to come apart as it did in apparent level cruise flight in benign weather.
One thing that has been alluded to by Crab in an earlier post is FW clutch slip and re-engagement which has happened more than once on a 206B and sheared the mast clean off on the one in Canada. Maybe in this case the mast twisted, then bent, as it is heavier than a 206B mast, and whirl took the mast and gearbox with it. Just going back through the video it looks like the cabin yaws violently and leaves the tail-boom behind. There was an AS355 that had a clutch slip and re-engagement in the C-Box in the UK many years ago that completely disintegrated in flight and that was with only a C-20 engine. Just another option in the conjecture.