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I bought my M20C two years ago and this odd little autopilot sits down behind the J-bar and flap pump handle. Its labeled "Mooney". No documentation on the thing at all. The AP works--with a little drifting and gentle s-turns. Its obvious a one-axis AP and I'm thinking its a Century I retro-fit item (AK-319), but I'm finding a paucity of information on it, and just don't know. Reading the Century I Manual, the controls and feature are very similar, but very different too. The heading knob on it is a mystery. I put an e-mail into Century describing the instrument and never got any word back from them. Supposedly, the Century I had a "retro-fit" model and I can't find any information about that kit--called the AK-319. I can't find any photos of this autopilot or any documentation to verify who manufactured it. Its an all electric system, which rules out Britton, but unlike most Century I autopilots, I don't have a Century I turn coordinator. Yes, my turn/slip instrument is electric, but there's no control knob on it, and its not branded as a Century gauge. Just behind our baggage compartment, in the tail, there is an electric gyro instrument, which seems as if it s part of the autopilot system. A warning label on this electric gyro warns against avoid any shocks or blows to the instrument. I'm lost and was hoping someone in the community might provide some information on this. I'd like to I.D. the device, obtain a manual for it and provide any sort of service the unit calls for. Short of pulling the servo to look for a manufacturer, I don't know what else to do. Even the electric gyro in the tail doesn't have a branding on it. Help!

I have a 66 E, so the wing leveler is different for the models done after 66, but I don't know what the problem is. My plane drifts to the right always. I have to turn my adjuster knob all the way left and it sometimes doesn't go right, but usually still drifts. If I turn it right, it makes a standard rate turn right. I have replaced the servos in all four locations. I have vacuum tested the sevos and the tubing with no leaks. I have vacuum tested the lines coming from the adjustment knob and they pass with flying colors. I then sent my controller back to britton and got a new one, because that had to be the reason. Well it didn't change anything. Still does the same thing. I then had the rigging checked on the plane and it was perfectly rigged. I changed the tubing to see if the system would switch and pull left, well that didn't work either, when I adjusted to the left (remember it is now opposite) it made a standard rate turn right and when I did the opposite, it just went straight. I did a vacuum test of the knob controller and it acts exactly the same depending of the way i adjust, so it seems to be working fine. So every component has been checked and is operating correctly. so it seems. The only thing i didn't do was switch the servos on both wings, because that is a bigger job than I wanted to do. I am of the opinion it is not a wing leveler problem, but somehow mechanical on my plane, but I don't know. I don't know how many hours I have spent on this, and all I get is more questions. Thanks for your guys help. Mark