| 1 | ACI | Air Caledonie International | IATA: SB, Callsign: Air Calin, IATA Prefix: 063, ICAO designator changed from RKL | NC | AVCODES |
| 2 | ACI | Air Cortez | Callsign: Air Cortez, | USA | AVCODES |
| 3 | ACI | Air Caledonie International | IATA: SB | | ICAO1 |
| 4 | ACI | Air Caledonie International | Based in New-Caledonia | F | TRAFFIC |
| 5 | ACIB | AMERIFREIGHT INC | | | SCAC3 |
| 6 | ACIB | ACI | | | SCAC4 |
| 7 | ACID | ACTION DELIVERY SERVICE INC | | | SCAC3 |
| 8 | ACIE | ACTION EXPRESS INC | | | SCAC3 |
| 9 | ACIE | A & C IMPORT EXPORT SERVICES INC | | | SCAC4 |
| 10 | ACIF | ALLIED CONTINENTAL FORWARDING INC | | | SCAC3 |
| 11 | ACIG | A C EXPRESS INC | | | SCAC3 |
| 12 | ACIH | ACI TRANSPORT | | | SCAC4 |
| 13 | ACIJ | ACE INDUSTRIES INC | | | SCAC3 |
| 14 | ACIK | AMERICARRIER, INC | | | SCAC3 |
| 15 | ACIK | AMERICARRIER INC | | | SCAC4 |
| 16 | ACIM | ALL CITY MOVING & STORAGE | | | SCAC3 |
| 17 | ACIM | ACOSTA IMPORTS | | | SCAC4 |
| 18 | ACIN | ACTION TRANSPORT | | | SCAC3 |
| 19 | ACIO | ALL CITY LEASING & WAREHOUSING INC | | | SCAC3 |
| 20 | ACIO | ALL CITY LEASING & WAREHOUSING INC | | | SCAC4 |
| 21 | ACIP | ACE MOVERS INC | | | SCAC3 |
| 22 | ACIP | ALTA-DENA CERTIFIED DAIRY LLC | | | SCAC4 |
| 23 | ACIQ | A C I SERVICE INC | | | SCAC3 |
| 24 | ACIR | ACTION CARRIER, INC. | | | SCAC3 |
| 25 | ACIR | ACTION CARRIER INC | | | SCAC4 |
| 26 | ACIS | Algoma Central Ry., Inc. | added 10/1995-7/2005 | | NAKINA |
| 27 | ACIS | Algoma Central R.R., Inc. | added 4/1995 | | NAKINA |
| 28 | ACIS | Algoma Central Ry. | added 4/1974; 1/1975-1/1994; eliminated 4/1995 | | NAKINA |
| 29 | ACIS | Algoma Central Ry. | added 4/74; 1/75-1/94; eliminated 4/95 | | NRHS |
| 30 | ACIS | Algoma Central R.R., Inc. | added 4/95 | | NRHS |
| 31 | ACIS | Algoma Central Ry., Inc. | added 10/95-7/2000 | | NRHS |
| 32 | ACIS | ALGOMA CENTRAL RWY. (CANADIAN NATIONAL RWY.) | | | PWRC |
| 33 | ACIS | Algoma Central Railway | | | RSRV |
| 34 | ACIT | AIR COURIERS INTERNATIONAL INC | | | SCAC3 |
| 35 | ACIT | ABC CONSOLIDATORS INTERNATIONAL INC | | | SCAC4 |
| 36 | ACIT | Azienda Consorziale Interprovinciale | | I | TRAFFIC |
| 37 | ACITY | Atlantic City Transportation | | USA | TRAFFIC |
| 38 | ACIU | Allstate Container | | | RSRV |
| 39 | ACIU | ALLSTATE CONTAINER INC | | | SCAC4 |
| 40 | ACIW | A C I LTD | | | SCAC3 |
| 41 | ACIX | Great Lakes Chemical Corp. | added 1/1998; 7/2000-7/2005; eliminated 10/2006 | | NAKINA |
| 42 | ACIX | Arkansas Chemicals, Inc. | added 4/1961; 4/1961-1/1994; eliminated 1/1998 | | NAKINA |
| 43 | ACIX | Atlantic Creosoting Co. | 7/1937-4/1938 (not listed) | | NAKINA |
| 44 | ACIX | Arkansas Chemicals, Inc. | added 4/61; 4/61-1/94; eliminated 1/98 | | NRHS |
| 45 | ACIX | Great Lakes Chemical Corp. | added 1/98; 7/2000 | | NRHS |
| 46 | ACIX | GREAT LAKES CHEMICAL CORP.[ATLANTIC CREOSOTING; ARKANSAS CHEMICALS,INC.] | | | PWRC |
| 47 | ACIX | Arkansas Chemicals (Great Lakes Chemical Corporation) | | | RSRV |
| 48 | ACIX | ARKANSAS CHEMICALS INC | | | SCAC3 |
| 49 | ACIX | GREAT LAKES CHEMICAL CORP | | | SCAC4 |
