Originally Posted by
Brian W May
In my day, the FADEC lived in the ECU (which is mentioned).
FADEC is a generic term for the process conducted by the FCU (now the, more sophisticated Electronic/Engine Control Unit).
Ages ago, I operated T700 engines that used ECU's (and the new ones now have FADEC's, DECU's, and BFD sez I). Black Hawk / Sea Hawk / S-70 family of helicopters. The nice thing about ECU's and DECU's and FADECs is how well they tune/trim fuel flow to keep the engines running smoothly and at best efficiency.
We had a function that was more or less a manual override called "ECU lockout." This allowed the non flying pilot to use the power control lever to bypass the ECU / DECU / FADEC. The engines would be less responsive, sure, but they didn't lose fuel feed.
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.
Is it there?