![]() The altitude hold oscillates wildly by 150 feet or more. Resetting it does nothing. ![]() (2) Flight 2: The very next day, I cruise at 8000 in mostly smooth air, OAT ~-13. (1) Flight 1: Cruise at 9000, OAT ~-10, sometimes smooth, some patches of significant turbulence encountered over 2 hours, and altitude hold works perfectly. Before I do that, I thought I would describe the behavior of the system on my last two flights and see if anyone has ideas: I'm may be looking at well over 2amu to go down this road. Next step would be to pull the tail servo, bench test, possibly send back to STEC to overhaul / replace. ![]() (1) The system ground tests fine per the manual (2) the cables from the tail servo are at correct tension levels (tested at annual) (3) pitch controls are well-lubed and not binding anywhere (4) avionics guy sprayed contact cleaner in the servo ![]() I've read the info on this topic here and have tried the simple stuff that people have said can fix this. ![]()
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