| 1 | CQA | Coast Air Ltd. | Callsign: Coastair, Ceased operations. | EAK | AVCODES |
| 2 | CQAA | CAN AM AUTO IMPORTERS | | | SCAC4 |
| 3 | CQAC | CAC ASSOCIATES | | | SCAC3 |
| 4 | CQAD | CARPET-ART-DECO INTL | | | SCAC4 |
| 5 | CQAF | CALIFORNIA INTERMODAL ASSOCIATES IN | | | SCAC4 |
| 6 | CQAH | CASH TRUCKING | | | SCAC4 |
| 7 | CQAI | CENTI TRANSPORT INC | | | SCAC4 |
| 8 | CQAM | CAN-AM EAST CARRIERS INC | | | SCAC4 |
| 9 | CQAN | CLAN SHIPPING COMPANY | | | SCAC3 |
| 10 | CQAO | CAMACO FREIGHT SERVICES | | | SCAC4 |
| 11 | CQAP | CARLS CAR CARRIERS INC | | | SCAC4 |
| 12 | CQAQ | CALLAN TRANSPORTATION INC | | | SCAC4 |
| 13 | CQAV | CAVALIER TOOL & MANUFACTURING | | | SCAC4 |
