| 1 | SRD | Search And Rescue 22 | | GB | AVCODES |
| 2 | SRD | Search and Rescue 22 | | | ICAO1 |
| 3 | SRD | Scenic Rail Dining | | USA | TRAFFIC |
| 4 | SRDA | SURROUNDART | | | SCAC4 |
| 5 | SRDB | SHAMROCK DISTRIBUTION, INC | | | SCAC1 |
| 6 | SRDB | SHAMROCK DISTRIBUTION INC | | | SCAC4 |
| 7 | SRDF | SATURN INDUSTRIES LTD | | | SCAC4 |
| 8 | SRDG | Stahlberg Roensch Duisburg GmbH | | D | TRAFFIC |
| 9 | SRDH | SUPERIOR DISPATCH INC | | | SCAC4 |
| 10 | SRDI | STADIUM DIRT DESIGNS INC | | | SCAC4 |
| 11 | SRDL | SMITH, RICHARD L TRUCKING INC | | | SCAC4 |
| 12 | SRDM | STOUTS READY MIX LTD | | | SCAC4 |
| 13 | SRDO | SCHROEDER ENTERPRISES | | | SCAC4 |
| 14 | SRDQ | STARR TRANSPORTATION LLC | | | SCAC4 |
| 15 | SRDR | SEARIDERS | | | SCAC4 |
| 16 | SRDS | SERVICIO REGIOMONTANO DE FLETES SA | | | SCAC4 |
| 17 | SRDV | S T I TRANS INC | | | SCAC4 |
| 18 | SRDW | SHAW, RON TRUCKING | | | SCAC4 |
| 19 | SRDX | D-X Sunray Oil Co. | 10/1957-4/1961; eliminated 7/1962 | | NAKINA |
| 20 | SRDX | Sunray D-X Oil Co. | added 7/1962; 7/1965-10/1966; eliminated 4/1969 | | NAKINA |
| 21 | SRDX | Sun Oil Co., D-X Division | added 4/1969 | | NAKINA |
| 22 | SRDX | Sunray D-X Oil Co. | eliminated 4/1970 | | NAKINA |
| 23 | SRDX | Sun Oil Co. | added 4/1970; 4/1970; eliminated 1/1972 | | NAKINA |
| 24 | SRDX | Sun Oil Co. of Pennsylvania | added 1/1972; 1/1975; eliminated 7/1976; 1/1980 | | NAKINA |
| 25 | SRDX | D-X Sunray Oil Co. | 10/57-4/61 | | NRHS |
| 26 | SRDX | Sunray D-X Oil Co. | 7/65-10/66; eliminated 4/69 | | NRHS |
| 27 | SRDX | Sun Oil Co., D-X Division | added 4/69 | | NRHS |
| 28 | SRDX | Sunray D-X Oil Co. | eliminated 4/70 | | NRHS |
| 29 | SRDX | Sun Oil Co. | added 4/70; 4/70; eliminated 1/72 | | NRHS |
| 30 | SRDX | Sun Oil Co. of Pennsylvania | added 1/72; 1/75; eliminated 7/76; 1/80 | | NRHS |
| 31 | SRDX | SUN OIL CO. {D-X SUNRAY OIL CO.} | | | PWRC |
| 32 | SRDX | Sunray D-X Oil Co. | | USA | TRAFFIC |
| 33 | SRDY | SAGE RIDERS TRANSPORT INC | | | SCAC4 |
