headsethair,
The accident I referred to above was a complete separation of everthing above the transmission. The entire rotor was found some distance from the hull.
Reading this report shook me up enough to suspend my helo training.
I would have less concern if all the complete rotorhead separations were pilot error, either low G loss of control or low rpm rotor stall.
But this accident was not likely pilot error, so I want to know what the final determination of cause was in this case.
The local R22 instructors have no knowledge of this case and I don't know a good way to get the facts. I thought of contacting Robinson but figured they would be biased.
My guess as to cause would be a freak gust, since an airworthiness directive was issued limiting flight in moderate turbulence.