Originally Posted by
ImagineIf
It's quite spread now. The original new 738s delivered to them have the short field performance package. Ideally yes you would put newer, lighter aircraft with more efficient engines and better fuel burn on the long routes but equally you sometimes see a 20+ years 738 doing a PFO from the North.
Each base has a mix of new and midlife 738s now, the newer tails usually do more challenging fields like SZG and INN.
BHX and STN had exclusively new 738s during the first 2 years of operation but they too have a mix now.
EDI and GLA are normally new-build 738s only but occasionally see an older aircraft and all other bases seem to have a mixture.