I was at ramp last night to fly for my Virtual Airlines with a particular schedule, I had to prepare the flight with chart from C&D and after several minute with APU on I loose my vor Readout and I couldn't start engine.
Did this two time same condition then I tried the third time after one minute I start immediately the engine and I menage to do a short flight.
but I can't use this aircraft  in such condition  At list I need time to prepare a flight.
We need to do a POLL for that?