For Republic Flights under American branding... this should almost never happen. Republic pilots have no access to JetNet (program used to make, change, and cancel nonrev listings, check in, and to see AAL flight loads). They are required to e-mail the corporate office at least 5 days in advance to make a listing, and then receive standby tickets (first time you see your PNR) in the mail.

This system is so completely useless I can't image why any republic pilot would try to use their American benefits (though I have seen some try.)

We do have access for all the other codeshare nonrev systems.. this is only a problem for AA branding.