| 1 | GTX | GTA Air, Inc. | Callsign: Big-Dee, | USA | AVCODES |
| 2 | GTX | GTA Air | | | ICAO1 |
| 3 | GTX | Gallo Tank Line (Ernest Gallo) | 1/1943 | | NAKINA |
| 4 | GTX | GALLO TANK LINE (ERNEST GALLO) | | | PWRC |
| 5 | GTXA | GTX TRANSPORT | | | SCAC4 |
| 6 | GTXC | GOLDEN TEX CO INC | | | SCAC4 |
| 7 | GTXD | GIANT TRANSPORTATION INC | | | SCAC4 |
| 8 | GTXF | GREENS TRANSPORT INC | | | SCAC4 |
| 9 | GTXG | GTC TRANSPORT | | | SCAC4 |
| 10 | GTXJ | GOODTIME TRANSPORTATION | | | SCAC4 |
| 11 | GTXK | GROUND TRANSPORTATION EXPRESS LLC | | | SCAC4 |
| 12 | GTXL | GTX LOGISTICS INC | | | SCAC4 |
| 13 | GTXM | GATEWAY | | | SCAC4 |
| 14 | GTXN | GT EXPRESS INC | | | SCAC4 |
| 15 | GTXP | GRAIN TRAIN EXPRESS LLC | | | SCAC4 |
| 16 | GTXS | GRAEBEL OF TEXAS INC | | | SCAC4 |
| 17 | GTXY | GRACIAN TRANSPORTS INC | | | SCAC4 |
