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Vertical Compass Gremlin

trey2398

By trey2398
in General Mooney Talk

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trey2398 Contributor

trey2398

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I had my #2 VOR indicator replaced today and on the flight home the vertical compass spun from 270 to 020 and held there.  I saw it happen as I was tuning both VORs to check their accuracy.  I then changed the VOR frequencies to see if that correcting things, which it did not.  However, as I reduced RPM to about 2300, it correced itself.  Seeing this, I brought the RPMs back up to about 2500 and the card made the same turn to the north.  It never did this before and seems to be tied to RPMs for some reason.  I'll have to go up and do some more trouble shooting but the only things different on this leg were the repaired #2 VOR indicator and a different set of headsets.  Anyone have any ideas what caused this and/or a fix.

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