RD
Ryan International Airlines
United States
IATA
RD
Romeo Delta
ICAO
RYN
Radio Callsign
RYAN INTERNATIONAL
Example: "RYAN INTERNATIONAL One Two Three" for RD123
About the "RYAN INTERNATIONAL" Callsign
When Ryan International Airlines pilots communicate with air traffic control, they identify themselves using the radio callsign "RYAN INTERNATIONAL" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "RYAN INTERNATIONAL Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.