| 1 | FTT | Flight Track Training GmbH | Callsign: Flight Training, | A | AVCODES |
| 2 | FTTA | FATTOR TRANSPORTATION COMPANY | | | SCAC3 |
| 3 | FTTB | FAS-TRIP TRANSPORT INC | | | SCAC4 |
| 4 | FTTC | FULLER, TIM TRUCKING INC | | | SCAC4 |
| 5 | FTTD | FIRST TEAM TRANSPORT GROUP LTD | | | SCAC3 |
| 6 | FTTD | FOWLER TRUCKING & TRADING INC | | | SCAC4 |
| 7 | FTTE | FOOTHILL TRUCK & EQUIPMENT LEASING | | | SCAC3 |
| 8 | FTTF | FAST TRACK TRANSPORTATION CORP | | | SCAC4 |
| 9 | FTTG | FREITAS TRUCKING | | | SCAC3 |
| 10 | FTTG | FRONTLINE TRANSPORTATION GROUP INC | | | SCAC4 |
| 11 | FTTH | F & T TRANSPORT LLC | | | SCAC4 |
| 12 | FTTI | FREIGHT TRAIN TRUCKING, INC | | | SCAC3 |
| 13 | FTTI | FREIGHT TRAIN TRUCKING INC | | | SCAC4 |
| 14 | FTTL | FREETRADE TRANSPORTATION LTD | | | SCAC3 |
| 15 | FTTL | FRONTIER TRANSPORT NA LP | | | SCAC4 |
| 16 | FTTN | F & T TRUCKING COMPANY INC | | | SCAC3 |
| 17 | FTTN | F & T TRUCKING COMPANY INC | | | SCAC4 |
| 18 | FTTO | FERMANICH, T & T OIL CO INC | | | SCAC3 |
| 19 | FTTP | FRAZIER-LETT ENTERPRISES INC | | | SCAC3 |
| 20 | FTTQ | FORT TRANSFER CO | | | SCAC3 |
| 21 | FTTQ | FORT TRANSFER CO | | | SCAC4 |
| 22 | FTTR | FIRST TRANSPORT INC | | | SCAC3 |
| 23 | FTTS | FETTES SHIPPING INC | | | SCAC4 |
| 24 | FTTT | FRONTIER TRANSPORTATION INC | | | SCAC3 |
| 25 | FTTT | FLYING T & T TRUCKING INC | | | SCAC4 |
| 26 | FTTU | FISCHINGER GMBH TANKSPEDITION + LOG | | D | BIC |
| 27 | FTTU | FISCHINGER GMBH CO KG | | | SCAC4 |
| 28 | FTTW | FIVE THREE THREE TWO TWO THREE ONE | | | SCAC4 |
| 29 | FTTX | TTX Co. | added 1/1992; 1/1994-7/2005 | | NAKINA |
| 30 | FTTX | Trailer Train Co. | added 10/1964; 7/1965-1/1980; eliminated 1/1992 | | NAKINA |
| 31 | FTTX | Trailer Train Co. | added 10/1964 | | NAKINA |
| 32 | FTTX | Trailer Train Co. (FMS flat cars specially equipped to provide for loading of automobile frames) | 7/1965-10/1968 | | NAKINA |
| 33 | FTTX | Trailer Train Co./TTX Co. (flat cars equipped with tie-down devices for loading automobile or truck frames) | 4/1970-1/1994 | | NAKINA |
| 34 | FTTX | TTX Co. (flat cars equipped with tie-down devices for loading automobile or truck frames, equipped with end of car cush.) | 7/2000 | | NAKINA |
| 35 | FTTX | Trailer Train Co. | Jul-65 | | NRHS |
| 36 | FTTX | Trailer Train Co. (FMS flat cars specially equipped to provide for loading of automobile frames) | 10/66-10/68 | | NRHS |
| 37 | FTTX | Trailer Train Co. | Apr-70 | | NRHS |
| 38 | FTTX | Trailer Train Co. (flat cars equipped with tie-down devices for loading automobile or truck frames) | 1/75-1/80; eliminated 1/92 | | NRHS |
| 39 | FTTX | TTX Co. (flat cars equipped with tie-down devices for loading automobile or truck frames) | added 1/92; 1/94 | | NRHS |
| 40 | FTTX | TTX Co. (flat cars equipped with tie-down devices for loading automobile or truck frames, equipped with end of car cush.) | Jul-00 | | NRHS |
| 41 | FTTX | TTX COMPANY | | | PWRC |
| 42 | FTTX | Trailer Train (TTX Corporation) | | | RSRV |
| 43 | FTTX | TTX COMPANY | | | SCAC4 |
