| 1 | UTS | State Air Traffic Service Enterprise | Callsign: Airruh, | UA | AVCODES |
| 2 | UTS | Ukrainian State Air Traffic Service Enterprise | | | ICAO1 |
| 3 | UTSA | UTI TRANSPORT SOLUTIONS-INTRANSIT | | | SCAC4 |
| 4 | UTSB | US TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 5 | UTSC | UNIVERSAL TRUCKING SERVICE INC | | | SCAC4 |
| 6 | UTSD | U T S | | | SCAC4 |
| 7 | UTSH | UTSS | | | SCAC4 |
| 8 | UTSK | US TRUCKLOAD SERVICES LLC | | | SCAC4 |
| 9 | UTSL | ULTRA SERVICES LLC | | | SCAC4 |
| 10 | UTSN | ULTRA TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 11 | UTSP | UTS TRANSPORTATION SERVICES INC | | | SCAC4 |
| 12 | UTSQ | US TRANSPORT SERVICES LLC | | | SCAC4 |
| 13 | UTSR | UNITED TRANSPORTATION SERVICES INC | | | SCAC4 |
| 14 | UTSW | UNITED TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 15 | UTSZ | TRI-COUNTY COMMUTER RAIL AUTHORITY {UTDC TRANSIT SERVICES, INC.} | | | PWRC |
| 16 | UTSZ | TRANSAMERICA LEASING INC | | | SCAC4 |
