Originally Posted by
jmanirish
LOW/M is probably not a non-rev, because as you point out, he/she is already cleared into J. There are reports of buy-ups to F(or in this case J) which show was cleared upgrades. If it was actually treated as a buy up to J in the backend, then he/she would be CPU eligible for J>F.
Originally Posted by
RobOnLI
Yes, I know, thanks

But LOW/M is not non-rev as he/she doesn't appear on the standby list for the flight. And with a very long upgrade list they wouldn't be clearing non-revs right now considering coach is overbooked and the flight was 20+ hours away.
Flyertalk often forgets that all those lowly Non-revs aren't created equally.
Some of them, traveling on company business for example, can book right into the Business cabin on a 3-cabin aircraft. And then
still waitlist for 3-cabin United First
That's what we call, NRPS, or Non-Revenue Positive-Space.
LOW/M = NRPS (99.9%)