| 1 | ADX | Anderson Aviation, Inc. | Callsign: Andax, | USA | AVCODES |
| 2 | ADX | Anderson Aviation | | | ICAO1 |
| 3 | ADX | Abbotts Dairies, Inc. | 7/1935-1/1950; 1/1952 (not listed) | | NAKINA |
| 4 | ADX | Ak-Sar-Ben Despatch, series 3000-3099 (Midwest Despatch Car Co.) | 7/1923 | | NAKINA |
| 5 | ADX | Ak-Sar-Ben Despatch, series 3000-3199 (Midwest Despatch Car Co.) | 8/1920 | | NAKINA |
| 6 | ADX | Abbotts Dairies, Inc. | 4/38-1/52 | | NRHS |
| 7 | ADX | *AK-SAR-BEN DESPATCH (MIDWEST DESPATCH CAR CO.) | | | PWRC |
| 8 | ADX | *ABBOTTS DARIES INC. | | | PWRC |
| 9 | ADXB | AMISTAD TRANSPORT INC | | | SCAC4 |
| 10 | ADXC | AIR DATA EXPRESS INC | | | SCAC3 |
| 11 | ADXC | ADDEX INC | | | SCAC4 |
| 12 | ADXD | AIR-LAND EXPEDITE INC | | | SCAC4 |
| 13 | ADXE | ADLUXE COMPANY LIMITED | | | SCAC3 |
| 14 | ADXE | A D EXPRESS | | | SCAC4 |
| 15 | ADXI | ADAMS MOTOR EXPRESS INC | | | SCAC3 |
| 16 | ADXI | ADAMS MOTOR EXPRESS INC | | | SCAC4 |
| 17 | ADXM | ADAMS MOVING | | | SCAC3 |
| 18 | ADXN | ADVENTURE EXPRESS INC | | | SCAC3 |
| 19 | ADXP | ADCOM EXPRESS INC | | | SCAC4 |
| 20 | ADXQ | A & D EXPRESS COMPANY | | | SCAC3 |
| 21 | ADXQ | AMERICAN LAND TRANSPORT CORP INC | | | SCAC4 |
| 22 | ADXR | A D TRANSPORT EXPRESS INC | | | SCAC3 |
| 23 | ADXR | A D TRANSPORT EXPRESS INC | | | SCAC4 |
| 24 | ADXS | ADRIANA EXPRESS | | | SCAC3 |
| 25 | ADXT | AMERICOLD LOGISTICS LLC | | | SCAC4 |
| 26 | ADXU | APPLIED CRYO TECHNOLOGIES | | USA | BIC |
| 27 | ADXU | Applied Cryo Technologies | | | RSRV |
| 28 | ADXY | ALLIED TEXTILE & REFUSE INC | | | SCAC4 |
