An ICAO callsign (3-letter designator and telephony designator) is a unique identifier used for air traffic control communications and operational identification.
Only Guernsey AOC holders can apply for an ICAO callsign.
Applications must be submitted directly via the International Civil Aviation Organization online portal at https://3ltd.icao.int/.
Full details, requirements, and applicable fees are provided within the ICAO application system.
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