In October, I believe USAIR, had the old AWE adopt the following:
Drop the SABRE bornemann flt planning system for the older legacy based SABRE FOS system (developed in the 70s for American, used at USAIR since early 2000s).
Drop the aerodata tkoff performance module, which does floating-point Tkoff perf (SCAP) calculations, in favor of the SABRE FOS TPS (tkoff performance system, used at USAIR since early 2000s ) which does a simple lookup table for rwy analysis.
You typically get better figures with the floating-point, because its near-real time, where the TPS numbers are a bit canned (and overly conservative).
It appears in the power-play btwn PIT and PHX for operational/dispatch performance data that PIT won out. Unfortunately for all those involved, they probably should have moved into the 21st century of dispatch/tkoff performance calculations, but chose to stick with the older LEGACY data.
I'm sure USAIR will eventually get there, but it's interesting to watch from the sidelines, whilst various EAST vs WEST departments struggle for what they are comfortable with vs. what is right.