Barit,
Today none of the principal appraisers mark-down RR 744 values compared to PW/GE - they're all the same. Our 524H-Ts are getting 26,000 hrs on-wing on a 8:1 hour:cycle ratio whereas our PW4056CNs get 15,000 tops (which is a lot better than pre-mod). It's because the H-T is so good that I can't understand why the Trent 892 is so poor.
Dutch,
That's interesting: what actual engine models are you describing?
Cheers
Torque