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Thread Tools | Display Modes |
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AUTOPILOT AWRY
Jack Allison wrote:
jmk wrote: Are you saying it doesn't work in ROLL mode, but does work in HDG mode? Unusual, but if so then it's a pretty simple fix. The HDG switch essentially disables the ROLL pot, so if it works okay in HDG but not in ROLL, then either the switch is bad, or the POT is bad, not much else involved. Sorry, I should have clarified. Heading mode works, roll works (sort of, I'll explain in a sec.). It is the other modes (NAV, OMNI, LOC, LOC back course) that don't work. For roll mode, if I turn the round roll knob slightly one direction, the ailerons keep moving to the stops. If the knob is centered though, the ailerons stay centered. I've only tried this on the ground. In the air, heading mode works fine but none of the other modes mentioned above. That's OK - the autopilot rolls till the roll feedback from the horizon gyro matches the request from the pot. You're ordering a certain amount of roll. If the horizon does not follow, turn more on the ailerons till the order is fulfilled. -- Tauno Voipio (CPL(A) - avionics engineer) tauno voipio (at) iki fi |
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