..which is the same video as the thread. Airline codes are a different beast.

This is a hilarious bit of exposition of how few people actually read/watch the links posted here. Anyways, both IATA and ICAO (as well as FAA) are explained in the video. Y'all should watch it!

It took months of original history just to get an answer to why Canadian airports start with a Y

You're trolling, right?

I thought it was remarkably well-executed