Originally Posted by Himeno

I've seen, found and booked AA codes on QF, BA, IB, CX, JL and RJ before via the tool without any issues (as well as IB and QF codes on BA, MH and IB codes on AY, QF on JL and AA, etc).
Until these AA on QR codeshares, the only time I haven't been able to find a codeshare was when that code wasn't available for booking, and it was still listed in the timetable.

AA7970 – 7989 is the first time I have ever found a codeshare that doesn't appear on oneworld listings at all.