I wonder where they will place the motor and get the power from in an engine pod and under what part of the FARs?
I'm guessing a small motor on the engine gearbox would be capable of turning the HP shaft, problem is it would have to turn the fuel pump, oil pumps, hydraulic pump(s) etc. This small motor is suddenly getting bigger.
How about just reversing the hydraulic pump flow and using it as a motor?