I get the Y is for Canadian airports, but while YVR comes from Vancouver, YOW for Ottawa for example I don't see what UL can relate to. Is it just a meaningless acronym ?

Edit: I'm not asking why they start with Y, that seems a convention, but rather what does the UL relate to

  • 2
    The other question doesn't answer what I want to know, it only explains where the Y comes from. How's that a duplicate ? – blackbird Mar 13 '15 at 17:56
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    @pnuts that's an assumption I couldn't verify elsewhere – blackbird Mar 13 '15 at 18:19

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