RU
Rainbow Air Euro
Also known as: Rainbow Air EU
United Kingdom
IATA
RU
Romeo Uniform
ICAO
RUE
Radio Callsign
Rainbow Air
Example: "Rainbow Air One Two Three" for RU123
About the "Rainbow Air" Callsign
When Rainbow Air Euro pilots communicate with air traffic control, they identify themselves using the radio callsign "Rainbow Air" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "Rainbow Air Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.