Business Insider: Every airport runway has 2 numbers on it — here’s why
Airport runway numbers
Every runway in the world is numbered...twice. These two numbers are closely linked to a shifting magnetic north, but are essential for airports to direct traffic through all the different runways.
http://www.twitter.com/businessinsid...73817344094208
Last edited by cblaisd; Jun 7, 2017 at 11:27 pm
Reason: Fixed link and made it clear text is a quote