flight_mode:
I know of a case, unfortunately not documented or scientifically proven in which a mobile was firmly blamed for slowing down the clock speed of a FADEC on a Williams FJ44 by a few MHz.
Assuming this is true (as you say, not documented...), there seems to be a very low level of EMI protection on said FADEC. How could it survive a lightning strike - or (in a military world) a nuclear EMP?