| 1 | UAI | Union Africaine Des Transports | Callsign: Unair, | CI | AVCODES |
| 2 | UAI | Uni-Air International | Callsign: Uniair, | F | AVCODES |
| 3 | UAI | NIUAS/13 AEF | | GB | AVCODES |
| 4 | UAI | Union Africaine des Transports | | | ICAO1 |
| 5 | UAIN | UTILITY AVIATION, INC. | | | SCAC4 |
| 6 | UAIX | United Asphalts, Inc. | added 10/1992; 1/1994-7/2005; eliminated 1/2007 | | NAKINA |
| 7 | UAIX | United Asphalts, Inc. | added 10/92; 1/94-7/2000 | | NRHS |
| 8 | UAIX | UNITED ASPHALTS, INC. | | | PWRC |
| 9 | UAIX | United Asphalts | | | RSRV |
| 10 | UAIX | UNITED ASPHALTS, INC. | | | SCAC4 |
