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S-Tec 20 issues

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Joined
Dec 17, 2016
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Hello All - Yesterday my S-Tec 20 started behaving badly. I set the heading bug and shortly after, my Archer turned left away from the bug. I changed the imput to my 430, and the AP started wandering back and forth a few degrees - always over correcting. It put me in a gentle side to side sway - OK for slow dancing, but no fun in the air. The steering control knob seems to work OK. Hopefully more tests tomorrow if the weather holds. Any ideas?
Thanks, EricB
 

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