I am afraid that it isn't linear.....vesting curves begin a 10 yrs and complete at 25 yrs finishing in the time of pension freeze which was feb. of 2007. a guy with 1989 would need to come out and tell us what his frozen benefit at age 60 is. And that would depend on what his final average earnings were at the time also,,,meaning what seat and amount he flew would have significant input on that amount. I am a little too early for the purposes of the question so mine won't help. There was a guy that was 52 a 1989 hire (early 1989) who had been a a320 captain for 2 years and quit to go to FEDEX...he was collecting a little under 5000 a month and flying as an MD11 fo ...I met him in Anchorage.