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September 26, 2008


Keith Irwin

Your post contains a small error: the opposite of 31 is 5, not 13.


What do you mean? Runway 31 is at a roughly 310-degree heading, and the other end is (310-180) at a roughly 130-degree heading. Similarly, the other runway is Runway 4/22, depending on which direction you're going.

Keith Irwin

You're right. For some reason my brain keeps wanting to have the two numbers sum to 36 instead of differ by 18. I used airline runways in an example for my databases class about a month ago, and when I first made the slides, I made the same mistake, but caught it before I showed the class. I'm not sure why my brain keeps wanting to do that when, really, I know better.

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