FADEC has been a thing since Concorde, and digital FADEC has been a thing since way before the 787, indeed was a thing on the “good old” 747-400 and 767/757. It is very well proven technology and barring some sort of coding issue (which I know nothing about as I am a very simple man but would be the only area I’d even begin to consider a potential weakness/source of failure) the power supply to the FADEC in any airliner is incredibly robust, with literally any of the power sources on the aircraft able to power it, which would only be necessary if the permanent magnet alternator that normally powers it failed. For that to happen simultaneously to both engines is such a remote likelihood that we may as well worry about meteorite strikes.
Last edited by Speed_Trim_Fail; 16th June 2025 at 15:49.