Re: [AFMUG] compass bearing factoid

Bill Prince Tue, 06 Aug 2019 13:13:35 -0700

You could always use true bearing. That does not change much, or at least very often.

bp
<part15sbs{at}gmail{dot}com>

On 8/6/2019 12:45 PM, [email protected] wrote:

Yep, locally we used to have a 34 and now we have a 35.

The runway is 346 magnetic 359 true.

From: Ken Hohhof

Sent: Tuesday, August 6, 2019 1:39 PM

To: 'AnimalFarm Microwave Users Group'

Subject: [AFMUG] compass bearing factoid

As a non pilot, I learned something today from the Internet. Airports sometimes have to renumber runways when the local magnetic field changes.

Those numbers are the compass bearing to the nearest 10 degrees. So runway 22R would be oriented at 220 degrees, the R designating the right runway of a pair of parallel runways.

I was thinking that would a way to number AP sectors, instead of what we do now, which is clockwise starting at AP1 being north. We could have AP0, 9, 18 and 27. Or 0, 6, 12, 18, 24 and 30. But then if the magnetic field of the earth shifted, we’d have to renumber.

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Re: [AFMUG] compass bearing factoid

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