It varies quite a bit from base to base, but I don't think it varies much between the Bus and 737 right now (not even going to try and talk about other frames, not much chance for you to hit CA beyond the Bus and Guppy anyways). Six months ago, I would not have guessed that we'd have four year upgrades (6-7 was my optimistic guess). But, those four year CAs were in our most junior base. If you wanted to be based in DEN or IAH, without going back to look at this most recent vacancy I'd hazard to say you are still looking at upwards of eight years. So, if you really want to make CA before you hit 65 you'll need to plan on living in one of our junior bases (unless you think you'd like commuting to reserve!). And you'll have to hope the economy doesn't tank too badly before you hit 65... someone should start a thread on what the recent market volatility might do to hiring!