| 1 | FRR | Fresh Air Ltd. | Callsign: Fresh Air, | WAN | AVCODES |
| 2 | FRR | Fresh Air | | | ICAO1 |
| 3 | FRR | Falls Road R.R. Co., Inc. | 7/2000-7/2005 | | NAKINA |
| 4 | FRR | Falls Road R.R. Co., Inc. | Jul-00 | | NRHS |
| 5 | FRR | FALLS ROAD RAILROAD CO. | | | PWRC |
| 6 | FRR | Falls Road Railroad | | | RSRV |
| 7 | FRR | FALLS ROAD RAILROAD CO INC | | | SCAC4 |
| 8 | FRR | FreightRail | | AUS | TRAFFIC |
| 9 | FRRA | FORRAJERA ATOTONIL CO SA DE CV | | | SCAC4 |
| 10 | FRRC | FORRESTER, CHARLES CO | | | SCAC3 |
| 11 | FRRD | Freiburger Reisedienst | | D | TRAFFIC |
| 12 | FRRE | FIRST RESOURCE TRANSPORTATION SERVI | | | SCAC3 |
| 13 | FRRF | FARRIS TRUCKING INC | | | SCAC3 |
| 14 | FRRG | FARRINGTON TRANSPORT | | | SCAC3 |
| 15 | FRRH | FRANTZ, RICHARD H | | | SCAC3 |
| 16 | FRRH | FARR TRANSPORT | | | SCAC4 |
| 17 | FRRI | FARRIS TRUCKING | | | SCAC3 |
| 18 | FRRI | FOUR-R (4-R) INC | | | SCAC4 |
| 19 | FRRK | FORREST TRUCKING | | | SCAC3 |
| 20 | FRRK | FRERES TRUCKING CO | | | SCAC4 |
| 21 | FRRL | FERRELL TRANSPORT INC | | | SCAC3 |
| 22 | FRRM | FOUR R (4R) EXPRESS INC | | | SCAC4 |
| 23 | FRRN | FARRANS TRANSFER AND STORAGE CO | | | SCAC3 |
| 24 | FRRN | FARR LOGISTICS INC | | | SCAC4 |
| 25 | FRRO | FARNSWORTH RELOCATIONS INC | | | SCAC3 |
| 26 | FRRO | FIERROS TRANSPORTATION | | | SCAC4 |
| 27 | FRRP | FERRARI EXPRESS INC | | | SCAC4 |
| 28 | FRRQ | FORREST & CO | | | SCAC3 |
| 29 | FRRQ | FOUR R (4R) TRANSPORT | | | SCAC4 |
| 30 | FRRR | FARRIER, GEORGE | | | SCAC3 |
| 31 | FRRS | FERRIS MOVING & STORAGE COMPANY | | | SCAC3 |
| 32 | FRRT | FARRS TRUCKING | | | SCAC3 |
| 33 | FRRT | FERROL TRUCKING SERVICES | | | SCAC4 |
| 34 | FRRU | FERRERO OFFENE HANDELSGES M G H | | | SCAC4 |
| 35 | FRRV | FRANKFORT AVIATION SERVICE | | | SCAC3 |
| 36 | FRRWY | Ferrovial Railway, S.A. | | ES | VKM |
| 37 | FRRX | Feather River Rail Society | added 7/2002; 7/2005 | | NAKINA |
| 38 | FRRX | FEATHER RIVER RAIL SOCIETY | | | PWRC |
| 39 | FRRX | Feather River Rail Society | | | RSRV |
| 40 | FRRX | FEATHER RIVER RAIL SOCIETY | | | SCAC4 |
| 41 | FRRY | FERRIDAY NAVIGATION CO | | | SCAC3 |
| 42 | FRRY | FORREST, RAY | | | SCAC4 |
