Am I wrong to think with a failed Tail Rotor drive shaft.....the tail rotor is not going to be providing any thrust as it is not going to be turning with any rapidity if at all. It might be wind milling a bit...but that isn't going to be of much use I should think.
Thus, my view is one is confronted with the procedure in the RFM that pertains to "Loss of Tail Rotor Drive"....which in most helicopters means an autorotative landing is the preferred technique.
My question still stands....."Can the 350 be flown to a suitable landing site without the Tail Rotor being driven by the MGB?".
Surely there are some 350 pilots out there that can give us the answer or at least quote from the RFM section that discusses that situation.
I cannot believe this is a bit of aeronautical mystery that remains unknown, unexplored, or is taboo to discussion.