| 1 | ATU | Atlant Aerobatics Ltd. | Callsign: Atlant-Hungary, | H | AVCODES |
| 2 | ATU | Air Toulon | Callsign: Toulon, | F | AVCODES |
| 3 | ATU | Aerotours GmbH | Callsign: Berlin Sky, | D | AVCODES |
| 4 | ATU | Atlant Aerobatics Ltd. | | | ICAO1 |
| 5 | ATUA | ANDYS TRUCKING COMPANY | | | SCAC3 |
| 6 | ATUB | ADVENTURE TOUR & TRAVEL | | | SCAC3 |
| 7 | ATUB | ADVANCED TRUCKING & LOGISTICS LLC | | | SCAC4 |
| 8 | ATUC | A TOUCH OF CLASS LIMOUSINE | | | SCAC3 |
| 9 | ATUC | A PLUS TRANSPORTATION INC | | | SCAC4 |
| 10 | ATUD | AMERICAN TRUCKING U S A INC | | | SCAC3 |
| 11 | ATUD | ALVARADO TRUCKING | | | SCAC4 |
| 12 | ATUE | A TOUCH OF ELEGANCE | | | SCAC3 |
| 13 | ATUG | ALEXANDRIA TRUCKING & UNDERGROUND C | | | SCAC3 |
| 14 | ATUH | ANDERSON TRUCKING COMPANY | | | SCAC3 |
| 15 | ATUH | AMERICAN TRANSPORTATION SERVICES IN | | | SCAC4 |
| 16 | ATUI | ALMAR TRUCKING CO | | | SCAC3 |
| 17 | ATUI | AMBYTH TRUCKING | | | SCAC4 |
| 18 | ATUJ | AMMA TRUCKING CORP | | | SCAC3 |
| 19 | ATUK | ARTHUR TRUCKING SERVICE INC (A CORP | | | SCAC3 |
| 20 | ATUL | A T O S LLC | | | SCAC4 |
| 21 | ATUO | ALTUS MOVING & STORAGE | | | SCAC3 |
| 22 | ATUQ | AIR-TRUCK SERVICE | | | SCAC3 |
| 23 | ATUR | ARTUR EXPRESS INC | | | SCAC4 |
| 24 | ATUS | ARTHUR TRUCKING | | | SCAC3 |
| 25 | ATUT | AUTO TRUCK TOWING & TRANSPORT INC | | | SCAC3 |
| 26 | ATUT | ATC TRUCKING INC | | | SCAC4 |
| 27 | ATUV | ARTS TOURS & TRAVEL | | | SCAC3 |
| 28 | ATUW | AMERICAN TRANSPORTATION INC | | | SCAC3 |
| 29 | ATUY | AMBROSE TRUCKING INC | | | SCAC4 |
