You can't. Well actually, the previous month stays there until about halfway into the next month, but anything prior to that is gone from sabre. You can do a 7V/employee# to see how many hours you flew each month, but the sequences aren't there any more. However, under Epays on jetnet, you can look at your past activity and pay sheets down there below your pay statements, and pretty much everything is on them. That's what I'm using now to catch up my logbook, and I've got a lot of catching up to do.