@vcapra1 said in Turbo III bug:

most likely it's trying to prevent you from using vertical autopilot because the virtual plane does not have that function.
As far as the EGT needle, do you see it move at all? It doesn't move initially but continue leaning until it starts increasing and reaches its max, and then you can adjust based on that peak. As long as you stay on the rich side

Thanks for The feedback. That makes perfect sence for fse doing that. I rechecked the aircraft i rented and it was equipped with AP, but like you say in the real one there is no alt hold. No big deal. And I'll mess around some more with the mixture.