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I know that the regs are ambiguous on the subject, but does anyone have a good argument as to why or why not you can do a dual VOR check on the ground if the VOR signal is good?

For my particular situation, I'm at KRDM which is about six miles from the DSD vortac. There is a clear line of sight to the station, but the airport is a couple hundred feet lower than the VOR. Seems to me that a dual ground check would be fine since no flags are visible and the station can be identified, but I'm not sure.

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  • $\begingroup$ There are lots of airports with a VOR on the field that have designated VOR checkpoints. I don’t see why checking dual VORs with a good signal would be a problem. $\endgroup$
    – JScarry
    Commented Feb 19, 2020 at 4:10

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Be careful performing a dual VOR check on the ground, especially if you are located near other aircraft or buildings that may interfere with the signal. I have performed a VOR check on the ground at a few airports around the Southwest, and I have found that you can get erroneous readings, on the ground, compared to performing the dual check in the air. I would say its more accurate in the air.

As for how to log it. DATE, PLACE, ERROR, and SIGNATURE. Place, meaning the VOR station identifier. 91.171(d)

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  • $\begingroup$ I second this. While on ground, you are subjected to all kinds of disturbances, so while it's possible, I would advice against it. $\endgroup$
    – Jpe61
    Commented Apr 24, 2021 at 7:25
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As long as the signal strength is solid, and you have a known location, with no outstanding navigational NOTAMS associated with it, there is no reason you cannot.

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