I have 1,000 hours on this installation of (3) HX systems and a TT AP in an RV10. This problem occurred sporadically in the past and is only noticeable in calm air. Now it's a constant problem in calm air.
When HX is driving TT AP it constantly banks left and right. It seems to be hunting for the exact track and ends up deviating a degree or 2 left and right for the duration of the flilght in calm air. This occurs whenever the TT is in LS or NAV mode. To mitigate the problem, I allow the HX to get the AP on course and at the right altitude, then switch the AP into 'native mode' where it navigates using its internal guidance. The immediately stops the banking.
I've played with some of the HX settings but need some advice. Please help
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