Granard,
from a general perspective I would describe the V2500 A5 as:
- Oil Usage - very low compared to the CFM - quite often less than 0.1 qt/hr
- Compressor stall/surge - only a few issues - seen 1 surge in 4 years
- EGT margin - still in positive territory when the engine is removed time-expired
- N1 Reversion - not seen it used as often as I have on the RB211 or Trent 700
- Vibes - Fan is good with routine relubes, core vibes low - only issue is monitoring for N2 vibe shift indicating a particular component failure - haven't seen one here yet
Noise and Fuel Eff - no comments to make.
Regards,
N1 Vibes