4R
Hamburg International
Germany
IATA
4R
Four Romeo
ICAO
HHI
Radio Callsign
HAMBURG JET
Example: "HAMBURG JET One Two Three" for 4R123
About the "HAMBURG JET" Callsign
When Hamburg International pilots communicate with air traffic control, they identify themselves using the radio callsign "HAMBURG JET" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "HAMBURG JET Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.