YOU CAN USE THIS TO REGAIN CONTROL OF A TICKET COUPON THAT IS FLOWN ON ANOTHER AIRLINE. FOR EXAMPLE, THE THIRD LEG IS ON BA BUT THE TICKET NEEDS TO BE "TREX'D". THE STATUS OF THE COUPON WILL SHOW "CTRL" MEANING THAT BA HAS CONTROL OF THE TICKET.
YOU HAVE TO REGAIN CONTROL OF THE TICKET IN ORDER TO TREX IT. WHEN SELLING OA SEGMENTS, TRY TO SELL IT AS THAT COMPANY'S FLIGHT INSTEAD OF THE AA FLIGHT IN ORDER TO PREVENT ISSUES FROM OCCURRING.
