Depends on the type of autopilot / aircraft, and which instruments and controls its tied in to. Or if its set up it to maintain airspeed and heading, but not altitude, which is sometimes argued more efficient that holding the altitude.
True. I am used to flying the heavy metal in X-Plane that I tend to forget about the lowly general aviation aircraft.
Anyway, I bought the Boeing 787 Dreamliner. Man is it a great aircraft to fly.
