| 1 | CSD | Courier Services, Inc. | Callsign: Delivery, | USA | AVCODES |
| 2 | CSD | Courier Services | | | ICAO1 |
| 3 | CSD | | | CS | TRAFFIC |
| 4 | CSDA | CAPE SAME DAY FREIGHT | | | SCAC4 |
| 5 | CSDB | COASTAL DISTRIBUTION SERVICE INC | | | SCAC3 |
| 6 | CSDB | CROSS STATE TRANSPORTATION | | | SCAC4 |
| 7 | CSDC | COUCH LINES LLC | | | SCAC4 |
| 8 | CSDD | CUMBERLAND VALLEY EXPRESS LLC | | | SCAC4 |
| 9 | CSDF | C S D TRUCKING INC | | | SCAC3 |
| 10 | CSDF | COUNTRYSIDE FUELS | | | SCAC4 |
| 11 | CSDG | C & S DRAYAGE | | | SCAC3 |
| 12 | CSDG | C & S DRAYAGE | | | SCAC4 |
| 13 | CSDH | CENTRAL STATES DISTRIBUTION SERVICE | | | SCAC3 |
| 14 | CSDH | CLAYCO WAREHOUSE & SUPPLY INC | | | SCAC4 |
| 15 | CSDI | CENTRAL STATES DISTRIBUTING INC | | | SCAC3 |
| 16 | CSDI | C & S CPT DISTRIBUTION INC | | | SCAC4 |
| 17 | CSDJ | CANSO SHIPPING LIMITED | | | SCAC3 |
| 18 | CSDJ | CYPRESS SHIPPING INC (PANAMA) | | | SCAC4 |
| 19 | CSDK | CARRIER SERVICE DIVISION OF KINGETT | | | SCAC3 |
| 20 | CSDL | CROSS, DAVID LYNN | | | SCAC3 |
| 21 | CSDL | CHINA SHIPPING DEVELOPMENT CO LTD T | | | SCAC4 |
| 22 | CSDM | C & S IOWA | | | SCAC3 |
| 23 | CSDM | CATHYS COMPANY | | | SCAC4 |
| 24 | CSDN | CASA DE LAS PINATAS | | | SCAC4 |
| 25 | CSDO | CONSOLIDATION SERVICES INTERNATIONA | | | SCAC3 |
| 26 | CSDO | CONSOLIDATION SERVICES INC | | | SCAC4 |
| 27 | CSDP | CONSOLIDATED PRODUCTIONS INC | | | SCAC3 |
| 28 | CSDQ | C & S DELIVERY | | | SCAC3 |
| 29 | CSDR | COAST DRAYAGE | | | SCAC3 |
| 30 | CSDR | COURTEOUS DELIVERY | | | SCAC4 |
| 31 | CSDT | COATSIDE TRANSPORTATION | | | SCAC3 |
| 32 | CSDT | CURTAIN - SIDE CARRIERS L L C | | | SCAC4 |
| 33 | CSDU | CONTAINER SOLUTIONS CO LLC | | UAE | BIC |
| 34 | CSDU | COLORADO SPRINGS DEPARTMENT OF UTILITIES (COLORADO SPRINGS UTILITIES) | | | PWRC |
| 35 | CSDU | CSKD-INTRANS | | | SCAC3 |
| 36 | CSDU | CSKD-INTRANS | | | SCAC4 |
| 37 | CSDW | C & S DISTRIBUTION CO | | | SCAC3 |
| 38 | CSDX | Metropolitan Water Reclamation District of Greater Chicago | added 10/1989; 1/1994; eliminated 10/1994; added 10/1996; eliminated 1/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 39 | CSDX | Metropolitan Sanitary District of Greater Chicago | added 7/1956; 10/1957-1/1980; eliminated 10/1989 | | NAKINA |
| 40 | CSDX | Sanitary District of Chicago | 7/1932-7/1954; eliminated 7/1956 | | NAKINA |
| 41 | CSDX | Sanitary District of Chicago | 4/38-1/52; eliminated 7/56 | | NRHS |
| 42 | CSDX | Metropolitan Sanitary District of Greater Chicago | added 7/56; 10/57-1/80; eliminated 10/89 | | NRHS |
| 43 | CSDX | Metropolitan Water Reclamation District of Greater Chicago | added 10/89; 1/94; eliminated 10/94; added 10/96; eliminated 1/97; 7/2000 | | NRHS |
| 44 | CSDX | METRO. WATER RECLAMATION DISTRICT OF GREATER CHICAGO | | | PWRC |
| 45 | CSDX | Metropolitan Water Reclamation District of Greater Chicago | | | RSRV |
| 46 | CSDX | METRO. WATER RECLAMATION DISTRICT O | | | SCAC4 |
| 47 | CSDY | CASSIDY TRUCKING INC | | | SCAC3 |
| 48 | CSDZ | CENTRAL SEED | | | PWRC |
