Originally Posted by
FH1100 Pilot
My guess would be that such a failure would result in the loss of engine power and an autorotation. My other guess would be that a dual FADEC failure would *never* happen.
Bell walked me through this before... if both channels fail, it has a 3rd backup unit that provides similar governing of the rpm, just slower and more exaggerated... so more likely to droop or overspeed if you monkey with collective too much.
If that 3rd backup fails. The fuel flow freezes at previous setting... so very challenging to fly around without droop or OS. They said you would want to cruise for a bit, but quickly find a landing spot and turn engine off and execute autorotation landing.