| 1 | TWN | Avialeasing Aviation Company | IATA: EC, Callsign: Twinarrow, Designator EC recalled by IATA. IATA designator changed from AD* | UZ | AVCODES |
| 2 | TWN | Avialeasing Aviation Company | IATA: AD, Callsign: Twinarrow, IATA Prefix: 036, IATA designator changed to EC | UZ | AVCODES |
| 3 | TWN | Avialeasing Aviation Company | IATA: V2, Callsign: Twinarrow, IATA Prefix: 552, | UZ | AVCODES |
| 4 | TWN | Avialeasing Aviation Company | IATA: EC | | ICAO1 |
| 5 | TWNA | TOWER INTERNAL TRAYS SERVICES | | | SCAC4 |
| 6 | TWNB | TWIN B TRUCKING | | | SCAC4 |
| 7 | TWNC | TOWN & COUNTRY FUEL LLC | | | SCAC4 |
| 8 | TWND | TOWN DELIVERY INC | | | SCAC4 |
| 9 | TWNE | TWO ZERO ONE ZERO ZERO SIX THREE (2 | | | SCAC4 |
| 10 | TWNG | TWIN CITIES LOGISTICS I INC | | | SCAC4 |
| 11 | TWNH | TOWNE HEATING CO INC | | | SCAC4 |
| 12 | TWNJ | TOPWINNER TRANSPORTATION LIMITED | | | SCAC4 |
| 13 | TWNM | TWIN MODAL INC | | | SCAC4 |
| 14 | TWNN | TIME WINNER INTL EXPRESS | | | SCAC4 |
| 15 | TWNS | TOWNSENDS INC | | | SCAC4 |
| 16 | TWNT | TWIN TOWN LOGISTICS LLC | | | SCAC4 |
| 17 | TWNV | TOWN DOCK INC, THE | | | SCAC4 |
| 18 | TWNW | TWIN SISTERS TRUCKING INC | | | SCAC4 |
| 19 | TWNZ | TWINSTAR LEASING LTD | | | PWRC |
| 20 | TWNZ | Twinstar Leasing Limited | | | RSRV |
