Our retirements pick up around 2020 as well. We start retiring around 200+/year in 2020 due to age 65.

So, if we are completely stagnant, i.e. zero net change in schedule, how do we replace the retirements? Unlike our superior brothers and sisters at the legacies, we don't have the Express/Connection that we can outsource our flying to. So how, and at what ratio do we replace our retirements?