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I just finished updating my 1984 Mooney 201 panel. My plane spent the majority of it's life in northern Minnesota and has 2300 hours total time. Everything I am selling worked very well when removed. Reasonable offers will be considered. Here is a list of equipment being offered for sale (Images Below): King KG258 Horizon Gyro (Image 1a and Image 1B): $300 Two Auto Pilot Servos: $300 each (or $500 for the pair) Trim Servo: $500 Oil Pressure Amp Part No. 950D0311-002: $50 Antenna: $50 Avionics Cooling Fan: $50 3 Switches: $125 each Intercom: $50

I am operating a Mooney M20K 252TSE, mostly IFR, that is equipped with conventional King avionics (e.g. KI-256, KCS55A, a KAP150 autopilot). In Altitude hold mode but not in Heading mode I frequently experience a sudden and violent pitch-up attitude (this happens from time to time, on almost any flight after some time). This is quite frightening and obviously immediately I disengage the autopilot. The plane always takes the nose up never down. After disengaging the autopilot the plane is still in trim. Does anybody have an idea what may be the cause of the problem? I hear that either the KAP150 computer or the KI-256 could be the problem, however, maybe others have experienced the same problem.

Hi guys, I have a Mooney M20K with an HSI and KFC150. It always passes the auto check fine on the ground and all. My issue is when I’m flying an ILS approach and want the autopilot to fly it. The localizer bars come online many miles out and the plane turns and tracks down that just fine. At about 10 miles out the glide slope bar on the KI206 (secondary VOR/localizer/GS) indicator pops up showing I’m below the glideslope which is normal but the glideslope flag on the HSI is still showing. After a few more miles and when I’m usually above the glideslope the glideslope bar on the HSI finally decides to wake up. By then it’s too late for it to couple to the autopilot and have the GS light come on and for the autopilot to track the glideslope although it’s still tracking the localizer. Sometimes I’ll use the control wheel steering button to “nose dive” a bit so the plane will descend down through the glide slope and then the GS light on the autopilot will come on and then it will take over and fly the plane down to the runway. It’s like the signal to the Glideslope portion of the HSI is weak or something. Isn’t it the same antenna as the KI206? Then today I flew it and the GS light on the autopilot won’t come on at all whether I fly down through the glideslope or not and the autopilot never does connect and follow the glideslope although the localizer is tracking fine. (The GS light isn’t burned out). When I took it to the avionics shop about 8 years ago they did an “overhaul” on the HSI and “turned up the signal” whatever that means and said they didn’t see any thing wrong with it although they didn’t fly it. They said it could be that some moron painted the fin type antennas on the tail with metallic paint. I removed the paint and it didn’t make much difference plus the KI206 seems to work just fine. Is it possible to swap the wiring from that portion of the HSI with the KI206 and see if it behaves differently? Any ideas? I’d greatly appreciate any help. Thanks. Jay

Hi all, we are having trouble with an avionic upgrade in our M20J replacing an old Trimble2000 GPS with a newer GNS530W. A KI525 HSI is installed with an KFC150 Autopilot. After flying back from the shop, we found that "automatic roll steering" was gone !?? Meaning the autopilot (KFC150) flying a multileg programmed flight plan (or any procedure like SID etc.) without any manual intervention for lateral steering. This used to work and does no longer! The A/P tracks the magenta GPS line in AP "NAV" mode, but does so only after a manual intercept course has been setup. After a waypoint turn >25 degree tracking is lost. The shop has "removed" a box labeled "GPS Box", which was connected to the NAV/GPS Switch. (which also has been removed). This apperently was an interface REQUIRED for automatic roll steering, converting the Arinc429 digital GPS signal to an analog input that the KFC150 wants. That we know by now, the box does something similar to the GDC31 adapter. http://www.peter2000.co.uk/aviation/tb20-experience/gdc31.pdf The avionics shop obviously lacks experience and knowledge to connect things correctly but also we and they lack WIRING documentation for this "GPS Box". (no other labeling or manufacturer visible). What I would like to know from fellow Mooniacs WITH KFC/KAP150 and GARMIN430/530 and working automatic roll steering is: What additional adapter equipment (other than GDC31) do YOU use / have installed to make it work? (make and model) Would be able to provide a link or a PM for wiring documentation for YOUR working adaptor? We hope to find somebody using the same adapter box we have (and trace the documentation this way). Thanks for your help Joe

I have a KAP-150 autopilot with a GNS 430W and Aspen Evolution. My autopilot tracks the GPS course with about a 1/8 mile offset to the right. When I select the Heading Bug steering source (non-GPSS), the autopilot tracks a couple of degrees right of the commanded heading. Is there a way to adjust or fine tune the KAP-150 autopilot to track course centerline and the heading bug? Thanks Dan