....putting the EGT at the *hottest* place in the exhaust stream may cause erratic starts - the 'hot spot' is often well over-temp compared to the rest of the Turbine. Your FADEC will no doubt have an over-temp shut-down parm. Exceed that, and the whole thing shuts down. Bad luck if that happens during start-up - you'll never get a good start.

My JJ-3000, for example, will easily pull in excess of 700 deg C on spool-up. And the T/C is at 10 o'clock. When I'm running 3/4 to full power, it's around 600 deg. There's a LOT of fuel and air flowing through there when the power is up, and from what I've seen on my monitor, it starts to get a lot cooler once the Turbine is actually running as opposed to starting...

BJ