Originally Posted by MM6830563

I understand this place is called "pilot lounge", but before expressing personal views with no reference to reality, please think twice.
For an Avanti II (like the one crashed in Flint) :
With a single gen, only unpowered load is freon cooling.
With a dual gen failure, you still keep powered ADC 1, AHC 1 plus EISIS (so, 2 indipendent references both for attitude and speeds)
With dual gen and battery failure (not yet to be heard on a P-180) you still have EISIS (attitude, speed, altitude, vertical speed) plus mag compass.
Mag compass is locked to about 240° hdg when pitot, windshield heaters, forward wing anti-ice and landing lights are powered.
It's there to work when everything else has failed.
Rather than italian weirdo, certification rules.
These are the facts.
For the rest, let NTSB guys do their (usually great) job.
After all, even if it's a lounge, still it's showing "pilot" on the sign