Hello,
I am learning how to use the autopilot, on the Q400, and I tried the Learjet as well. I am understanding most of it, but I am still facing "AP Disengaged" about a second after I engaged it sometimes without really understanding why. I am clearly not going too fast or too slow or having a pitch or a roll to high, and there are no specific warning on anywhere, and I am not touching the commands. Are there somewhere a list of all the reasons why an autopilot would disengage?
A more general question, out of curiosity, my understanding is that the autopilot, even as advanced as the one of the Q400, does not control the thrust. It does control the pitch in order to stabilize the speed OR the altitude for a given thrust. Is it a general behavior? Are there any plane where the thrust is controlled by the autopilot?
Thanks.