| 1 | FSI | Flightways Air Services Pte Ltd. | Callsign: Flightways, | SGP | AVCODES |
| 2 | FSIB | FSI TRUCKING INC | | | SCAC4 |
| 3 | FSIC | FLETES INTERNACIONALES ORCA | | | SCAC4 |
| 4 | FSID | FARRIS INDUSTRIES | | | SCAC3 |
| 5 | FSIG | FSI LOGISTICS INC | | | SCAC4 |
| 6 | FSIK | FREIGHT SYSTEMS INC | | | SCAC4 |
| 7 | FSIM | FESCO INTERMODAL INC | | | SCAC3 |
| 8 | FSIM | FREIGHT SIMPLE INC | | | SCAC4 |
| 9 | FSIP | FREIGHT SALES INC | | | SCAC3 |
| 10 | FSIQ | FETESTI SHIPPIING LTD | | | SCAC3 |
| 11 | FSIQ | FOSS INTERNATIONAL INC | | | SCAC4 |
| 12 | FSIR | FREEDOM SINGERS | | | SCAC4 |
| 13 | FSIS | FSI TRANSPORTATION SERVICES INC | | | SCAC3 |
| 14 | FSIT | FULL SERVICE TRUCKING INC | | | SCAC3 |
| 15 | FSIV | FREIGHT SERVICES INC | | | SCAC4 |
| 16 | FSIW | FORD SAWMILLS INC | | | SCAC4 |
| 17 | FSIX | FSIX Inc. | 7/2000 (not listed) | | NAKINA |
| 18 | FSIX | Freight Services, Inc. | 1/1994 (not listed); added 10/1994; eliminated 10/1996 | | NAKINA |
| 19 | FSIX | Freight Services, Inc. | 1/94; added 10/94; eliminated 10/96 | | NRHS |
| 20 | FSIX | FSIX Inc. | Jul-00 | | NRHS |
| 21 | FSIX | FREIGHT SERVICES, INC. (FSIX, INC.) | | | PWRC |
| 22 | FSIX | Freight Services Inc. | | | RSRV |
