Originally Posted by
ericferret
Except for aircraft equipped with an electric hydraulic pump e.g AW 139.
Simple anwer maybe!!!
Ascend Charlie was responding to a question regarding carrying out a check with the engines running:
The question was:
Can helicopters do a full and free check of flight controls with engine(s) running before lifting off?
so even on the 139 with its hydraulic pump, it's still not possible to do a F&F check of the controls with the engines running.