| 1 | AQC | Alquiladora de Casas, S.A. de C.V. | Callsign: Alquiladora, | MEX | AVCODES |
| 2 | AQCA | APOLLO CONTAINER LINES | | | SCAC3 |
| 3 | AQCA | ACOSTA, MANUEL | | | SCAC4 |
| 4 | AQCC | AMERICAN CARRIERS CO | | | SCAC3 |
| 5 | AQCC | AMERICAN COURIER COMPANY INC | | | SCAC4 |
| 6 | AQCD | A & C INCORPORATED | | | SCAC4 |
| 7 | AQCE | AMERICAN COURIER EXPRESS INC | | | SCAC3 |
| 8 | AQCE | AMERICAN TRANSPORTATION OF CADES IN | | | SCAC4 |
| 9 | AQCF | ATLANTIC COASTAL FUELS INC | | | SCAC4 |
| 10 | AQCH | AQUACHART SIA | | | SCAC4 |
| 11 | AQCI | ASTRAL CARRIER INC | | | SCAC3 |
| 12 | AQCI | ASTRAL CARRIER INC | | | SCAC4 |
| 13 | AQCK | A&C TRUCKING | | | SCAC3 |
| 14 | AQCK | ACTION TANKER CORPORATION | | | SCAC4 |
| 15 | AQCL | ARTIC COASTAL TRANSPORTS INC | | | SCAC3 |
| 16 | AQCN | AMERICAN CONSOLIDATED TRANSPORTATION, INC | | | SCAC3 |
| 17 | AQCN | AMERICAN CONSOLIDATED TRANSPORTATIO | | | SCAC4 |
| 18 | AQCO | ANCON COMPANIA ARMADORA S A | | | SCAC3 |
| 19 | AQCR | ARAWAK CARIBBEAN LINE LTD. | | | SCAC3 |
| 20 | AQCR | ALLECAP TRANSPORTATION INC | | | SCAC4 |
| 21 | AQCS | A C TRAILERS INC | | | SCAC3 |
| 22 | AQCS | AQUACOUSTIC REMOTE TECHNOLOGIES INC | | | SCAC4 |
| 23 | AQCT | A C T | | | SCAC3 |
| 24 | AQCT | ACCU-TRANS INC | | | SCAC4 |
| 25 | AQCV | ACTIVITY S A | | | SCAC3 |
| 26 | AQCX | Aqua-Chem, Inc., Cleaver Brooks Division | added 1/1969; 4/1970-1/1980; 1/1994-7/2005 (not listed) | | NAKINA |
| 27 | AQCX | Aqua-Chem, Inc., Cleaver Brooks Division | added 1/69; 4/70-7/2000 | | NRHS |
| 28 | AQCX | AQUA-CHEM INC., CLEVER BROOKS DIV | | | PWRC |
| 29 | AQCX | Aqua-Chem (Celaver Brooks Division) | | | RSRV |
| 30 | AQCX | AQUA-CHEM INC., CLEVER BROOKS DIV | | | SCAC4 |
| 31 | AQCY | ACTIVE CLAY INC | | | SCAC4 |
