Y1
Yellowstone Club Private Shuttle
United States
IATA
Y1
Yankee One
ICAO
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Radio Callsign
YCS
Example: "YCS One Two Three" for Y1123
About the "YCS" Callsign
When Yellowstone Club Private Shuttle pilots communicate with air traffic control, they identify themselves using the radio callsign "YCS" followed by the flight number spoken in aviation pronunciation. For example, flight 456 would be "YCS Four Five Six." Radio callsigns are assigned by ICAO and are distinct from the airline's marketing name.