As an aside, many years ago before the advent of car phones, I had a CB radio in my car (Yes, sad I know - but it saved me getting stuck in traffic on many occasions!). One day I was re-tuning the aerial VSWR and noticed that whenever I keyed the transmitter on Ch1, a neighbour's radio-controlled car went nuts! The electric motor went to max RPM and the steering went hard over, so that the little car shot round in tight circles until I released the transmit key. The little devil in me waited for the owner to try to catch his car and pick it up, whereupon I pressed the tit again and it escaped from him! I kept this up for a good few minute pi$$ing myself with laughter until I finally relented and let him pick it up.
The point of this story? I was using a fully licensed radio system and it was causing massive interference to an electronic system 50 yards away. So perhaps it's not unreasonable to speculate on the effect of a Plod pocketfone on a FADEC a few inches away.......