| 1 | FSF | Fly7 Finland Oy | Callsign: Rocky, | FIN | AVCODES |
| 2 | FSF | Freunde des Schienenverkehrs Flensburg e.V. | Flensburg | D | privat-bahn.de |
| 3 | FSF | Ferrovia Suzzara Ferrara | | I | TRAFFIC |
| 4 | FSFC | FAST FREIGHT CO | | | SCAC3 |
| 5 | FSFC | FAST FREIGHT LLC | | | SCAC4 |
| 6 | FSFD | FAMILY SEAFOOD INC | | | SCAC4 |
| 7 | FSFE | FOUR STAR FREIGHT | | | SCAC3 |
| 8 | FSFF | FAST FORWARD FREIGHT INC | | | SCAC3 |
| 9 | FSFG | FOUR STAR FREIGHT SERVICES INC | | | SCAC3 |
| 10 | FSFH | FISH, FRANCIS H | | | SCAC3 |
| 11 | FSFH | FAST FREIGHT TRANSPORT LTD | | | SCAC4 |
| 12 | FSFI | FRESH FISH CO, THE | | | SCAC3 |
| 13 | FSFJ | FOUR SEASONS FRESH TRANSPORT LLC | | | SCAC4 |
| 14 | FSFK | FIVE STAR FREIGHT MANAGEMENT INC | | | SCAC4 |
| 15 | FSFL | BNSF Ry. Co. | added 4/2005; 7/2005 | | NAKINA |
| 16 | FSFL | Burlington Northern Santa Fe Ry. Co. | added 4/2001; eliminated 4/2005 | | NAKINA |
| 17 | FSFL | Burlington Northern Santa Fe Ry. Co. | added 4/2001 | | NRHS |
| 18 | FSFL | BURLINGTON NORTHERN & SANTA FE RAILWAY (BNSF) | | | PWRC |
| 19 | FSFL | BNSF Railway | | | RSRV |
| 20 | FSFL | FOUR SEASONS FOOD LTD | | | SCAC4 |
| 21 | FSFN | FASTFRATE INTERNATIONAL | | | SCAC3 |
| 22 | FSFN | FIVE (5) STAR FREIGHT INC | | | SCAC4 |
| 23 | FSFQ | F S F TRUCK LINE | | | SCAC3 |
| 24 | FSFR | FOUR STARS FORWARDING | | | SCAC3 |
| 25 | FSFS | FAST FREIGHT SYSTEMS | | | SCAC3 |
| 26 | FSFU | FREIGHT SERVICES FORWARDING | | | SCAC3 |
| 27 | FSFY | FIFTY (50) STATE FREIGHT | | | SCAC4 |
