Yes, Sikorsky did trial a fenestron version of the 76, I think it was going to be called the 'D' (but don't quote me). The film I have seen was of a standard 76, but in military trim (some forces use them eg Phillipines) and it was doing all manner of things.
I agree Dennis Kenyon has a spectacular show, but how prudent some of his manouevres are is a moot point I think.
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Another day in paradise