The VOR compass here has an arrow that points to the north east. I never saw an VOR compass like that. What is the explanation?

  • 4
    $\begingroup$ Wrong tab there $\endgroup$ – ymb1 May 30 '19 at 12:35
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    $\begingroup$ Everything points to Ozzy Osbourne... $\endgroup$ – CatchAsCatchCan May 30 '19 at 12:37
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    $\begingroup$ Every VOR compass has a declination one direction or another. If you've never seen that before, its only because you never looked. $\endgroup$ – abelenky May 30 '19 at 15:50

From ICAO SARPS Annex 4:

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This is due to the magnetic declination, which varies from place to place, as well as over time.

Note that VOR stations are typically not realigned over time, so discrepancies may arise with respect to the ever changing magnetic north, but in radio navigation a radial is just that – drawn over a chart, and tuned to, it will always be the same.

Further reading:

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    $\begingroup$ So the arrow points to magnetic north? $\endgroup$ – TomMcW May 30 '19 at 17:26
  • $\begingroup$ @TomMcW: Not always, see update. $\endgroup$ – ymb1 May 30 '19 at 22:01
  • $\begingroup$ This answer could be improved by clarifying that the "arrow" in the figure in the original question points to some version of "north", more specifically to some version of magnetic north, which due to various reasons might not be exactly the same as the actual magnetic north but it's pretty close. I don't think the originally asker had any idea that the arrow was a north-pointing index of any kind at all. $\endgroup$ – quiet flyer May 30 '19 at 22:07

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