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Thread: Use of PMUs
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Old Dec 31, 2009 | 9:25 am
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MSPeconomist
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Originally Posted by TheMadBrewer
If you've purchased a Y/B/M fare (for international) and there is inventory in the appropriate upgrade fare bucket (Z for DL, U for NW), then you can confirm the upgrade ahead of time.
For NW TATL/TPAC upgrades, U is used for M and discount B (rare, IME) fares; there's another bucket for Y and full unrestricted B (like BEERT) fares, I believe Z class. These are the same buckets as are used for mileage upgrades.
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