ICAO Aircraft Codes Abbreviations and Acronyms
- UACUnited Air Charters
- UADUniversity Air Squadron
- UAEAFUnited Arab Emirates Air Force
- UAFUnited Arab Emirates Air Force
- UAGAfra Airlines
- UAHAir Experience Flight, Cranwell
- UAIUnion Africaine Des Transports
- UAJUniversity Air Squadron
- UAKKiev Aviation Plant
- UARAerostar Airlines
- UASUniversity Air Squadron
- UCCUganda Air Cargo
- UCHUS Airports Air Charter
- UCKAir Division of the Eastern Kazakhstan Region
- UCOUcoaviacion
- UCOAVIACIONUcoaviacion
- UCSUnited Carriers Systems
- UDAPsudiklat Perhubungan Udara/Plp
- UDARAPsudiklat Perhubungan Udara/Plp
- UDNDniproavia
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