H5
I-Fly
Russia
IATA
H5
Hotel Five
ICAO
RSY
Radio Callsign
RUSSIAN SKY
Example: "RUSSIAN SKY One Two Three" for H5123
About the "RUSSIAN SKY" Callsign
When I-Fly pilots communicate with air traffic control, they identify themselves using the radio callsign "RUSSIAN SKY" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "RUSSIAN SKY Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.