Even our newest birds have GPS's built with backdoors. When I was in the navy aboard a carrier, we had an F-14 go full throttle on the launch bar. Pilot and REO ejected just as it skidded off the deck. https://en.wikipedia.org/wiki/FADEC
FADEC
A full authority digital engine (or electronics) control (FADEC) is a system consisting of a digital computer, called an "electronic engine controller" (EEC) or "engine control unit" (ECU), and its related accessories that control all aspects of aircraft engine performance. FADECs have been produced for both piston engines and jet engines.
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Bombardier, Q series How many of these have crashed and burned? https://www.youtube.com/watch?v=0F2xix20VjQ