| 1 | UIT | Universitetet I Tromso | Callsign: Spirit, ICAO Callsign changed to Artic. | N | AVCODES |
| 2 | UIT | Universitetet I Tromso | Callsign: Artic, ICAO Callsign changed from Spirit. | N | AVCODES |
| 3 | UITA | UNITED INTERMODAL TRANSPORT INC | | | SCAC4 |
| 4 | UITK | UNIFIED INTERMODAL TRANSPORT INC | | | SCAC4 |
| 5 | UITT | U.S. TRANS TECH, INC | | | SCAC1 |
| 6 | UITT | US TRANS TECH | | | SCAC4 |
