I have a 78 Mooney 20J with a Century III autopilot and electric trim. There is currently a problem with the pitch and the pitch and altitude hold, neither seem to work right in the air. But, separate from the problem, neither the Century III pitch or the altitude hold seem to work unless the electric trim switch is turned on. Is this correct, or should the Century III pitch functions work independent of the electric trim. Does the electric trim and the pitch servos work in conjunction when the autopilot is on? The electric trim switch in my case is on the pilot yoke, forward to trim nose down, back to trim nose up, and push down to disengage the autopilot.
Thanks.