| 1 | AAX | Afric'air Express | Callsign: Afrex, | CI | AVCODES |
| 2 | AAX | AMA-Flyg I Goteborg HB | Callsign: Sky Express, Name changed to Salair AB. ICAO designator changed to SKX | S | AVCODES |
| 3 | AAX | Advance Aviation Co. Ltd. | Callsign: Advance Aviation, | T | AVCODES |
| 4 | AAX | Agrico Chemical Co. | added 7/1972; 1/1975-1/1985; eliminated 10/1990 | | NAKINA |
| 5 | AAX | Agrico Chemical Division, Continental Oil Co. | added 7/1971; eliminated 7/1972 | | NAKINA |
| 6 | AAX | Agrico Chemical Co., Division of Continental Oil Co. | 4/1970; eliminated 7/1971 | | NAKINA |
| 7 | AAX | Agrico Chemical Co. | 10/1966 | | NAKINA |
| 8 | AAX | Agrico Chemical Co., Division of Continental Oil Co. | added 4/1966 | | NAKINA |
| 9 | AAX | American Agricultural Chemical Co. | 8/1920-7/1965; eliminated 4/1966 | | NAKINA |
| 10 | AAX | American Agricultural Chemical Co. | 4/38-7/65; eliminated 4/66 | | NRHS |
| 11 | AAX | Agrico Chemical Co., Division of Continental Oil Co. | added 4/66 | | NRHS |
| 12 | AAX | Agrico Chemical Co. | Oct-66 | | NRHS |
| 13 | AAX | Agrico Chemical Co., Division of Continental Oil Co. | Apr-70 | | NRHS |
| 14 | AAX | Agrico Chemical Co. | 1/75-1/80; eliminated 10/90 | | NRHS |
| 15 | AAX | AGRICO CHEMICAL CO. | | | PWRC |
| 16 | AAX | AGRICO CHEMICAL CO. (AMERICAN AGRICULTURAL CHEMICAL CO.) | | | PWRC |
| 17 | AAX | American Agricultural Chemical (Agrico Chemical) | | | RSRV |
| 18 | AAXA | AAA EXPRESS AIR DELIVERY INC | | | SCAC3 |
| 19 | AAXA | AAA EXPRESS PARCELS LTD | | | SCAC4 |
| 20 | AAXB | A & A EXPRESS INC | | | SCAC4 |
| 21 | AAXC | A-A EXPRESS CORPORATION | | | SCAC3 |
| 22 | AAXC | AAA TRANSPORT INC | | | SCAC4 |
| 23 | AAXD | AAA EXPEDITING SERVICE INC | | | SCAC3 |
| 24 | AAXD | ALL AXIS SYSTEMS LTD | | | SCAC4 |
| 25 | AAXE | AA EXPRESS INC | | | SCAC3 |
| 26 | AAXH | AMERIMEX AIR CHARTERS | | | SCAC4 |
| 27 | AAXI | A & A AUTO EXTERMINATORS | | | SCAC3 |
| 28 | AAXI | A & A TRANSFER INC | | | SCAC4 |
| 29 | AAXJ | ALL ACCESS TRANSPORTATION INC | | | SCAC4 |
| 30 | AAXL | ATA TRANSPORTATION LLC | | | SCAC4 |
| 31 | AAXM | AAT TRUCKING | | | SCAC4 |
| 32 | AAXN | AAXON INDUSTRIAL INC | | | SCAC3 |
| 33 | AAXN | A & M TRANSPORT | | | SCAC4 |
| 34 | AAXO | ARST-ALEX INC | | | SCAC4 |
| 35 | AAXP | ADVANCE AIR EXPRESS INC | | | SCAC3 |
| 36 | AAXQ | A A EXPRESS | | | SCAC3 |
| 37 | AAXR | A & A EXPRESS INC | | | SCAC3 |
| 38 | AAXS | AAA COAST EXPRESS INC | | | SCAC3 |
| 39 | AAXW | ARTIC AIR EXPRESS INC | | | SCAC4 |
| 40 | AAXY | AA TRANSPORT | | | SCAC4 |
