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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

I've just had the GTX345 installed in my G1000 equipped Ovation with S-Tec autopilot (29-0363) - one of the first installations in Australia. Firstly the background of ADSB Down Under. For some inexplicable reason, installation was mandated in Australia for IFR not later than the middle of 2017, which means we are the test subjects, and will pay a hefty premium. About 10 years ago when ADSB was in the early implementation stage, the authorities were going to subsidise ADSB, but it's been conveniently forgotten. Since then the cost has skyrocketed, not helped at all by the fact that early adopters of glass panels with S-Tec autopilots have not got any meaningful support from Mooney, and my feeling is Garmin only came out with a G1000 solution when they did to head off the competition. Anyway, having stumped up the money for the GTX-345 installation and expecting a positive result, the G1000 does not recognise the GTX345. The only way to enable it is to go into the configuration menu, tell the G1000 the GTX345 is installed, and then it will display. When powered down, the configuration procedure has to be repeated. I'm still not sure whether it's a software or hardware problem, but Garmin have been slow to resolve it. My concerns are the longer the Ovation sits in the shop, the more cost it will attract, my aircraft is not available until the issue is resolved. The avionics shop asked Garmin to replace the GTX345 but were told no, there was too much of a backlog, so it seems Garmin care less about existing customers and more about new ones.