Originally Posted by Probe

Airbus come with two engines, UAL's are IAE. Somewhere around half have CFM's. Not the exact same engine as the 737. I believe they have a slightly bigger fan and different model number.

I flew 320's with 28,500 lbs CFM's, and some special high altitude 319's with the same engines and extra oxygen tanks in the rear cargo hold. The 319's were rockets. I never did a Max TO in one, even at 6500'. I am not sure I ever had a assumed temp lower than 55. Even in the summer at 6500 feet and 35 C OAT.