5L
Aerosur
Bolivia
IATA
5L
Five Lima
ICAO
RSU
Radio Callsign
AEROSUR
Example: "AEROSUR One Two Three" for 5L123
About the "AEROSUR" Callsign
When Aerosur pilots communicate with air traffic control, they identify themselves using the radio callsign "AEROSUR" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "AEROSUR Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.