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A comment on Tampa Airport: Moving magnetic poles forces runway changes.

Re:Tampa Airport: Moving magnetic poles forces runway changes by cosmicray on Friday January 07, 2011 @12:18PM (#2080155)
What isn't mentioned in all this, is that the runways were slightly east of true north in the first place. Please see the FAA diagram on wikipedia... http://upload.wikimedia.org/wikipedia/en/8/8e/KTPA-FAA.pdf

If probably didn't take that much more magnetic north change to prompt the need to relabel the runways.

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Re:Tampa Airport: Moving magnetic poles forces runway changes by ijuhygtfhyuj on Friday January 07, 2011 @12:28PM (#2080193)
The runways are labelled rounded to the next 10deg so if a runway is 154.9 and the magnetic pole moves 0.2 deg you go from runway 15L to runway 16L

Alternately you could move the runway a bit

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