Originally Posted by
B747-437B
The governing carrier on a ticket is the one whose fare basis is used for issuing the ticket. A carrier may not publish a fare basis that requires travel wholly outside of its own lines. If the fare basis is a YY basis then the governing carrier is the one whose stock is used to plate the ticket.
Why not? It happens all the time (sort of) with codeshares; I have flown tickets on CO stock that are entirely XE operated.
Outside of code shares, what rule(s) prevent carrier X from publishing a fare basis that requires travel solely on another airline? What about ticket stock: could CO issue a ticket on 005 stock that uses only OAL fare basis codes? This must be a frequent event in the area of reward tickets.
(I'm sufficiently knowledgeable to be dangerously clueless).