9S
Spring Airlines
China
IATA
9S
Niner Sierra
ICAO
CQH
Radio Callsign
AIR SPRING
Example: "AIR SPRING One Two Three" for 9S123
About the "AIR SPRING" Callsign
When Spring Airlines pilots communicate with air traffic control, they identify themselves using the radio callsign "AIR SPRING" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "AIR SPRING Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.