HW
Hello
Switzerland
IATA
HW
Hotel Whiskey
ICAO
FHE
Radio Callsign
FLYHELLO
Example: "FLYHELLO One Two Three" for HW123
About the "FLYHELLO" Callsign
When Hello pilots communicate with air traffic control, they identify themselves using the radio callsign "FLYHELLO" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "FLYHELLO Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.