@linuxgurugamer: As well as the heading hold issues mentioned above, I can't seem to get the nav function to work at all either. The "xtrk" display just flickers rapidly (often +- the same reading), and the aircraft settles into a gentle left bank plus some twitching. The OSD heading indicator works just fine. The bank controller is working fine too if I set a manual bank angle. Modded (inc. FAR dev build), nothing interesting in the logs. Any ideas? I've used PA extensively in the past, but t