Yeah they did adjust the Dec pairing - it was an earlier pairing that got revised. Seems they often add the RFO to the flight a week or so after the original CA/FO pairing is built. That was the case on this one although like I said it was a revision - not a single pairing to handle it. The other one in November flew w/o an RFO - it is listed as a Charter so maybe that's the difference? SIG is looking into it.