American Airlines is reviewing how two Boeing 737-800 flights briefly operated near Phoenix Sky Harbor with the same call sign, AA2482, as air traffic control kept the aircraft safely separated. The late-night overlap involved one arriving flight from Chicago and one departing flight to Chicago, creating an unusual communications risk but no incident.
The Chicago-to-Phoenix service was delayed, prompting the airline to use another aircraft in Phoenix for the outbound leg rather than disrupt passengers. That produced the rare situation in which both planes were in the same airspace at the same time under the same identifier. Controllers quickly distinguished them as the “arrival” and the “departure” and maintained standard separation throughout.
The episode has drawn scrutiny because duplicate call signs on the same frequency can increase the chance of confusion for pilots and controllers, even when no traffic conflict develops. The Federal Aviation Administration and American Airlines are investigating how the operational mix-up occurred. Reports indicate the flight number is normally used in both directions on the Chicago–Phoenix route, but the delay and aircraft substitution caused the overlap.