tailgator

Thanks everyone for pitching in on the pitch issues I agree it's more likely an autopilot issue then. The plane is currently down for AP upgrade and I'll check it again with and w/o the new AP once it's airborne.

I thought my KFC200 controls pitch through trim only, and my trim wasn't moving in those situations.

My M20K has a long-period longitudinal oscillation (a phugoid) of roughly a period of 10s in cruise. While it is on autopilot, I check to see the trim is not moving at all during these oscillations, so it's the plane's own aerodynamics (interestingly, the KFC200 knows not to over-correct it and stays put?). Normally a plane should have damping for this motion and the oscillation should eventually flat out (i.e. self-stabilizing). However, in my flights the phugoid is pretty stable and doesn't reduce over time. It is not a big oscillation, but it is definitely noticeable both physically and on my G5. While it is not a big deal, it definitely bothers me a bit. Curious if other Mooneys have this as well?