| 1 | AAO | Atlantis Airlines | Callsign: Atlantis Air, | USA | AVCODES |
| 2 | AAO | Administracion Aeronautica Internacional, S.A. de C.V. | Callsign: Aerointer, | MEX | AVCODES |
| 3 | AAO | Atlantis Airlines (USA) | | | ICAO1 |
| 4 | AAOA | A AMATO INC | | | SCAC3 |
| 5 | AAOA | A AMATO INC | | | SCAC4 |
| 6 | AAOC | ALL CITY AIR AND OCEAN INC | | | SCAC4 |
| 7 | AAOD | AGAINST ALL ODDS TRUCKING | | | SCAC3 |
| 8 | AAOE | AARON EXPRESS INC | | | SCAC3 |
| 9 | AAOE | AMALIAS SHOES INC | | | SCAC4 |
| 10 | AAOF | ALL AROUND FREIGHT INC | | | SCAC3 |
| 11 | AAOG | AAA MOVING & STORAGE | | | SCAC3 |
| 12 | AAOG | AGENCIA ADUANAL OCHOA GOPY | | | SCAC4 |
| 13 | AAOH | A & A TRUCKING INC | | | SCAC3 |
| 14 | AAOI | ASSOCIATES AUTO TRANSPORT INC | | | SCAC3 |
| 15 | AAOI | AAON INCORPORATED | | | SCAC4 |
| 16 | AAOJ | AUTO TECH AUTO CARRIERS | | | SCAC3 |
| 17 | AAOK | ANGELO & AGNELO TRUCKING INC | | | SCAC3 |
| 18 | AAOL | AA OIL FIELD SERVICE INC | | | SCAC3 |
| 19 | AAON | AAMSCO INC | | | SCAC3 |
| 20 | AAON | ALPHA AND OMEGA TRANSPORTATION SERV | | | SCAC4 |
| 21 | AAOO | AAA MOVING & STORAGE INC | | | SCAC3 |
| 22 | AAOP | ALL ABOARD TRANSPORTATION | | | SCAC3 |
| 23 | AAOP | A & A LOGISTICS GROUP | | | SCAC4 |
| 24 | AAOQ | A & A OF ILLINOIS INC | | | SCAC4 |
| 25 | AAOR | AATCO | | | SCAC3 |
| 26 | AAOS | AARON TRANSPORTATION SERVICES INC | | | SCAC3 |
| 27 | AAOT | ACTION AIRPORT EXPRESS INC | | | SCAC4 |
| 28 | AAOU | ARABIAN AMERICAN OIL COMPANY | | | SCAC3 |
| 29 | AAOV | AAA MOVING SERVICES INC | | | SCAC3 |
| 30 | AAOY | ATTALA OIL CO INC | | | SCAC4 |
