Long upgrade = Lenght of the training program. Sorry I forgot this was a public forums, internal lingo.

Short versus Long upgrade just has to do with the training program. Currently, we get about one week of ground school and 5 sim sessions for upgrade, and two Captains are paired together. Long upgrade training program will be 8 to 10 sim sessions, new hire will be paired with an upgrade and about 2 weeks of ground school.