Every airport runway has 2 numbers on them — here’s why

Source: http://www.businessinsider.com/what-numbers-on-airport-runways-mean-delta-united-american-spirit-virgin-2017-5
May 31, 2017 at 06:15PM

Every runway in the world is numbered...twice. These two numbers are closely linked to a shifting magnetic north, but our essential for airports to direct traffic through all the different runways.

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