| 1 | SYC | Systec 2000, Inc. | Callsign: Systec, | USA | AVCODES |
| 2 | SYC | Systec 2000 | | | ICAO1 |
| 3 | SYC | (The) Sylvania Central Ry. Co. (Wrightsville & Tennille R.R. Co.) | 7/1923-7/1936 | | NAKINA |
| 4 | SYC | WRIGHTSVILLE & TENNILLE RAILROAD CO. [SYLVANIA CENTRAL RWY. CO.] | | | PWRC |
| 5 | SYCA | SEAY CONTRACTING CO | | | SCAC4 |
| 6 | SYCB | SISLER LUMBER COMPANY INC | | | SCAC4 |
| 7 | SYCC | SYCAMORE SPECIALIZED CARRIERS INC | | | SCAC4 |
| 8 | SYCE | RAILROAD STORAGE & DRAYAGE INC | | | SCAC4 |
| 9 | SYCG | STONY CREEK TRUCKING LLC | | | SCAC4 |
| 10 | SYCH | SYMES, CHARLES | | | SCAC4 |
| 11 | SYCI | SYC LOGISTICS INC | | | SCAC4 |
| 12 | SYCJ | SOUTHERN DELIVERY | | | SCAC4 |
| 13 | SYCM | STEVESART AND IMAGERY | | | SCAC4 |
| 14 | SYCR | SAMY C TRANSPORT | | | SCAC4 |
| 15 | SYCT | STAR TOYS AND COLLECTIBLES | | | SCAC4 |
| 16 | SYCY | STEEL TOY CARRIERS LLC | | | SCAC4 |
