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You're standing at check-in, boarding pass in hand, and there it is: YYZ. Or YVR. Or that mysterious three-letter combo that looks like someone just leaned on the keyboard. You've probably wondered at least once, who came up with airport codes, and what do they actually mean? The answer is a surprisingly good story. Airport Codes Explained: A Brief (and Bumpy) History It started, as many things do, with a problem. In the 1930s, the aviation industry was growing fast and weath