Hi everybody,
let's say you're flying a jet with FADEC engines (A320 or 737NG) and during the flight you lose the EGT indication on one engine (amber crosses). Of course MEL says it's a no go item but what if it appens in flight? some collegues of mine reckon it would justify a diversion. Normal cruise EGT is about 250° below MCT limit, so the only things which could rise the temperature that much is a fire or an engine stall, things that would be detected by other aircraft systems/indications. I wouldn't divert if the other parameters are normal and if I've suitable airports along the routing but this is only my personal point of view.
What would you do?