Could be mistaken,
but think UPS FDA amount stays at $4k until the increase to $4.2.
And, let's not forget that should someone wind up retiring as an FO only, FDA amount is $3.2k.
So, should fortune not smile, a career UPS FO's pension would be $80k.
Would be hard for me to imagine a scenario where a career FedEx FO doesn't greatly exceed that