Hey Nik, heres one to see if you have seen, Citation jet, holding on the runway, everything normal, add throttle to take off, as we reach max power, the left ITT guage drops to zero. Everything else remains normal. Figuring its the gauge, and the short runway we are on, we continue and in the air, everything on the engine sounds normal, it follows the throttle control. Nothing out of the ordinary. Pressures fine, all other guages normal. Come in for a landing, call the factory to order the guage and they says its not the guage. Any guess as to what we found?

The fix was $250,000.00 if that helps.