| 1 | ULC | Airlanka Cargo Limited | Callsign: Airlanka Cargo, | CL | AVCODES |
| 2 | ULC | Albinati Aviation Ltd. | Callsign: Albi, | M | AVCODES |
| 3 | ULCE | U L C EXPRESS | | | SCAC4 |
| 4 | ULCH | ULCH TRANSPORT LIMITED | | | SCAC4 |
| 5 | ULCN | USA LOGISTIX CORPORATION | | | SCAC4 |
| 6 | ULCU | UNICO LOGISTICS CO LTD | | ROK | BIC |
| 7 | ULCU | UNICO LOGISTICS | | | SCAC4 |
| 8 | ULCW | UNICO LOGISTICS CO LTD | | | SCAC4 |
| 9 | ULCX | Unit Load Car Corp. | added 7/1959; 4/1961-4/1970; eliminated 10/1974 | | NAKINA |
| 10 | ULCX | Unit Load Car Corp. | added 7/59; 4/61-4/70; eliminated 10/74 | | NRHS |
| 11 | ULCX | UNIT LOAD CAR CORP. | | | PWRC |
| 12 | ULCZ | ULRIZH CEMENT CO. | | | PWRC |
