Why do we enter aircraft on the left side? Because of the calvary! Huh? Read on...

Most men are right handed and soldiers carried their swords on the left side and mounted their horses from the left, so the sword wouldn't get in the way.

If you look at any old biplane from World War I, you can see that pilots mounted their planes the same way, from the left side. Many of the planes even have stirrups for the pilots to climb. Since the late 1940's, military aircraft have their stair steps on the left and commercial jets followed suit.

And so you get on your next flight the way you do because the calvary used to wear swords!

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