Originally Posted by Mea25000

Uhm... The retirements are built in to those numbers. The back end attrition is rarely anywhere near the upgrade line, usually falling off the very bottom realistically affecting no one. Early on there may be a slight increase of east cost FO departures closer to that line but this will be a very small number.
Alaska upgrade time for anyone hired 2016 to current should be 7 - 11.5 years. I know that isn’t sexy. Those are just the facts.