| 1 | SCD | Associated Aviation Limited | Callsign: Associted, | WAN | AVCODES |
| 2 | SCD | Associated Aviation | | | ICAO1 |
| 3 | SCD | Servicios de Coches Dormitorios | | MEX | TRAFFIC |
| 4 | SCDB | SCHADEBO SHOWCASES / SHOWCASE DEPOT | | | SCAC4 |
| 5 | SCDC | SPECIAL DISPATCH OF CALIFORNIA INC | | | SCAC4 |
| 6 | SCDF | S D & C FREIGHT SYSTEM | | | SCAC4 |
| 7 | SCDI | SMART CHOICE DELIVERY INC | | | SCAC4 |
| 8 | SCDJ | STEER CREEK FARMS | | | SCAC4 |
| 9 | SCDK | SCHROEDER TRUCK LINE L L C | | | SCAC4 |
| 10 | SCDL | SCHLEI DRAY LINE INC | | | SCAC4 |
| 11 | SCDM | STANDARD COMPONENTS DE MEXICO SA | | | SCAC4 |
| 12 | SCDQ | SIEMENS CANADA LTD | | | SCAC4 |
| 13 | SCDR | SCOT INDUSTRIES INC | | | SCAC4 |
| 14 | SCDS | SCHNEIDER NATIONAL CARRIERS INC-OPT | | | SCAC4 |
| 15 | SCDT | SOCIEDAD COOP DE TRANSPORTES DE CAR | | | SCAC4 |
| 16 | SCDV | STARTON TRUCKING INC | | | SCAC4 |
| 17 | SCDX | Swift Canadian Co., Ltd. | 7/1935-1/1952 | | NAKINA |
| 18 | SCDX | Swift Canadian Co., Ltd. | 4/38-1/52 | | NRHS |
| 19 | SCDX | SWIFT CANADIAN CO., LTD. | | | PWRC |
| 20 | SCDY | SAUCEDO CALDERON, SAMUEL | | | SCAC4 |
