I think the four year degree has been required since sometime in 2009, so for the first 2 years maybe it wasn't required. But for "most" of the airlines history now, one has been required. And of the ATA guys, I'd bet more than half of the 20 or so ATA pilots have one. I can think of a couple Illinois grads as well as Purdue gradsand one retired AF pilot. They do issue degrees in places other than Grand Forks!