SR
Swissair
Switzerland
IATA
SR
Sierra Romeo
ICAO
SWR
Radio Callsign
Swissair
Example: "Swissair One Two Three" for SR123
About the "Swissair" Callsign
When Swissair pilots communicate with air traffic control, they identify themselves using the radio callsign "Swissair" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "Swissair Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.