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by aerlinger 3220 days ago
> This is on a couple of billion flights

You sure about that number? Seems incredibly high to me.
1 comments
Tempest1981 3220 days ago
"​Airlines are expected to operate 38.4 million flights in 2017, up 4.9%."

Maybe 3 billion passengers/year?

From http://www.iata.org/pressroom/pr/Pages/2016-12-08-01.aspx

link