UD
Hex'Air
France
IATA
UD
Uniform Delta
ICAO
HER
Radio Callsign
HEX AIRLINE
Example: "HEX AIRLINE One Two Three" for UD123
About the "HEX AIRLINE" Callsign
When Hex'Air pilots communicate with air traffic control, they identify themselves using the radio callsign "HEX AIRLINE" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "HEX AIRLINE Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.