In the Airbus design philosophy (and for that matter in the Boeing philosophy) for transport aircraft, is there any way to override electronic control of the fuel feed to the engines and control them manually? Granted, it would be a back up mode, and likely not as fuel efficient.
Can't speak for Airbus, but Boeing has no manual/mechanical reversion for engine control on its FADEC equipped aircraft.
Separately, may I ask what is a "power control lever" on the S-70 series aircraft? Is that a twist grip on the collective?