Its not the first time this happened....................
In Bristows there was once an engineer (quote:- him with the close set eyes and receeding hairline) who's byeword was "No need to check that, I did that".
That was until the complete Tail Rotor assy of the Hiller took off across the airfield, all by itself!
The old, (really old) Bristow hands will know who I'm talking about!
Tony