| 3001 | FINU | UES INTERMODAL AG | | | SCAC4 |
| 3002 | FINV | FREDWIL INC | | | SCAC4 |
| 3003 | FINW | FINNEGANS WAREHOUSE CORP | | | SCAC3 |
| 3004 | FINX | Total Petrochemicals USA, Inc. | added 4/2006 | | NAKINA |
| 3005 | FINX | Trinity Rail Management, Inc. | added 4/1998; 7/2000-7/2005; eliminated 4/2006 | | NAKINA |
| 3006 | FINX | Finley Co. Inc. | added 1/1954; 7/1954-10/1957; eliminated 1/1961; 4/1961; added 4/1963; 7/1965-10/1966; eliminated 10/1967 | | NAKINA |
| 3007 | FINX | *FINLEY CO., INC. | | | PWRC |
| 3008 | FINX | *TRINITY RAIL MANAGEMENT INC. | | | PWRC |
| 3009 | FINX | +TOTAL PETROCHEMICALS USA, INC. | | | PWRC |
| 3010 | FINX | Finley Co. (Trinity Rail Management) | | | RSRV |
| 3011 | FINX | FINLEY CO INC | | | SCAC3 |
| 3012 | FINX | TOTAL PETROCHEMICALS USA INC | | | SCAC4 |
| 3013 | FINY | FIFO INCORPORATED | | | SCAC4 |
| 3014 | FIOI | FIORINO SHIPPING SRL | | | SCAC4 |
| 3015 | FIOJ | FIORENPINO, J C | | | SCAC3 |
| 3016 | FIOL | FISCHER OIL CO | | | SCAC3 |
| 3017 | FIOL | FISCHER OIL CO | | | SCAC4 |
| 3018 | FION | FILION TRANSPORT INC | | | SCAC3 |
| 3019 | FIOP | FIRST OPTION INC | | | SCAC4 |
| 3020 | FIOQ | FIOLENT SHIPPING COMPANY, LTD. | | | SCAC3 |
| 3021 | FIOT | FIOROT TRUCKING, INC | | | SCAC3 |
| 3022 | FIOU | PIETRO FIORENTINI SPA | | I | BIC |
| 3023 | FIOU | PIETRO FIORENTINI SPA | | | SCAC4 |
| 3024 | FIP | Ferrovia Intra Premeno | | I | TRAFFIC |
| 3025 | FIPC | FIRST PIEDMONT CORPORATION | | | SCAC3 |
| 3026 | FIPI | FITTIPALDI MOVING & STORAGE CO | | | SCAC3 |
| 3027 | FIPQ | FIREPROOF WAREHOUSE AND STORAGE COM | | | SCAC3 |
| 3028 | FIQL | FILI SHIPPING COMPANY LIMITED | | | SCAC3 |
| 3029 | FIQL | FILI SHIPPING COMPANY LIMITED | | | SCAC4 |
| 3030 | FIQN | FLETES INTERNACIONALES QUINONES (MX | | | SCAC4 |
| 3031 | FIR | First Line Air | | | ICAO1 |
| 3032 | FIR | Flats Industrial R.R. Co. | 7/2000-7/2005 | | NAKINA |
| 3033 | FIR | Flats Industrial R.R. Co. | Jul-00 | | NRHS |
| 3034 | FIR | FLATS INDUSTRIAL RAILROAD | | | PWRC |
| 3035 | FIR | Flats Industrial Railroad | | | RSRV |
| 3036 | FIR | FLATS INDUSTRIAL RAILROAD COMPANY | | | SCAC4 |
| 3037 | FIRC | FIRST TRANSPORTATION COMPANY | | | SCAC3 |
| 3038 | FIRC | FIRST CONTINENTAL FREIGHT SYSTEMS | | | SCAC4 |
| 3039 | FIRE | FIREPROOF STORAGE AND VAN COMPANY I | | | SCAC3 |
| 3040 | FIRE | FIREMASTER OILFIELD SERVICES INC | | | SCAC4 |
| 3041 | FIRE | Fire patrol | | X | TRAFFIC |
| 3042 | FIRG | First Glasgow | | GB | TRAFFIC |
| 3043 | FIRI | FISHER, R T INC | | | SCAC3 |
| 3044 | FIRL | FIORILLO, RONALD TRUCKING | | | SCAC3 |
| 3045 | FIRM | First Manchester | | GB | TRAFFIC |
| 3046 | FIRN | FIRSTCO TRANSPORTATION LLC | | | SCAC4 |
| 3047 | FIRQ | FIRST (1ST) LINE LOGISTICS | | | SCAC4 |
| 3048 | FIRR | FIBER TRANSPORT | | | SCAC3 |
| 3049 | FIRS | FLATS INDUSTRIAL RAILROAD COMPANY | | | PWRC |
| 3050 | FIRS | FIRPO & SONS INC | | | SCAC3 |
| 3051 | FIRT | FILM TRANSIT, INC | | | SCAC3 |
| 3052 | FIRW | FAIRWAY INC | | | SCAC3 |
| 3053 | FIRW | FAIRWAY INC | | | SCAC4 |
| 3054 | FIRX | Federal Ice Refrigerating Co. | 7/1930 | | NAKINA |
| 3055 | FIRX | FEDERAL ICE REFRIGERATING CO. | | | PWRC |
| 3056 | FIS | Wingglider Limited | Callsign: Sherry, | GB | AVCODES |
| 3057 | FISA | FISCHER AVIATION INC | | | SCAC4 |
| 3058 | FISC | FISCHBACH TRUCKING CO | | | SCAC3 |
| 3059 | FISD | FISK DISTRIBUTING INC | | | SCAC4 |
| 3060 | FISE | FISHER TRUCKING INC | | | SCAC4 |
| 3061 | FISG | FISCHER STORAGE & TRANSFER | | | SCAC3 |
| 3062 | FISH | FISHER, DAVID M | | | SCAC4 |
| 3063 | FISI | FIRST SERVICE DRIVEAWAY INC | | | SCAC3 |
| 3064 | FISK | FISK TRUCKING AND TRANSFER COMPANY | | | SCAC3 |
| 3065 | FISK | FISK TRUCKING AND TRANSFER COMPANY | | | SCAC4 |
| 3066 | FISM | FISCUS MOTOR FREIGHT INC | | | SCAC3 |
| 3067 | FISN | FISH, STEVEN A | | | SCAC3 |
| 3068 | FISO | FISHER TRANSPORTS LLC | | | SCAC4 |
| 3069 | FISP | FILTER SPECIALISTS INC | | | SCAC3 |
| 3070 | FISQ | FISHER TRUCKING AND CARTAGE | | | SCAC3 |
| 3071 | FISS | FOURCHON INTERNATIONAL SHIPPING SER | | | SCAC3 |
| 3072 | FIST | FISCHERS TRANSFER | | | SCAC3 |
| 3073 | FIST | FISCHER-HUGHES TRANSPORT INC | | | SCAC4 |
| 3074 | FISY | FIKSE TRUCKING COMPANY | | | SCAC3 |
| 3075 | FISZ | ECORAIL INCORPORATED | | | PWRC |
| 3076 | FISZ | Ecorail | | | RSRV |
| 3077 | FISZ | ECORAIL INC | | | SCAC4 |
| 3078 | FIT | Aero Fiesta Mexicana, S.A. de C.V. | Callsign: Aerofiesta, | MEX | AVCODES |
| 3079 | FIT | Finalair S.A. | Callsign: Finalair, Ceased operations. | TG | AVCODES |
| 3080 | FITA | FINLEY TANK TRUCKING INC | | | SCAC3 |
| 3081 | FITB | FIT LOGISTICS INC | | | SCAC4 |
| 3082 | FITD | FITE DISTRIBUTION SERVICES COMPANY | | | SCAC3 |
| 3083 | FITD | FITE DISTRIBUTION SERVICES COMPANY | | | SCAC4 |
| 3084 | FITG | FIRKINS TRUCKING INC | | | SCAC4 |
| 3085 | FITI | FISHER TRUCKING | | | SCAC3 |
| 3086 | FITI | FITZPATRICK, J F INDUSTRIES INC | | | SCAC4 |
| 3087 | FITL | FTL INC | | | SCAC3 |
| 3088 | FITL | F T L INC | | | SCAC4 |
| 3089 | FITM | FITZERALD MOVING SERVICE | | | SCAC3 |
| 3090 | FITO | FIORENTINO, JOE C | | | SCAC3 |
| 3091 | FITP | FITZPATRICK TRANSPORT (DONALD E FIT | | | SCAC3 |
| 3092 | FITR | FAITH TRANSPORTATION | | | SCAC3 |
| 3093 | FITR | FLEMMING II TRUCKING INC | | | SCAC4 |
| 3094 | FITZ | FITZPATRICKS MOVERS | | | SCAC3 |
| 3095 | FIV | Five Star Airlines | Callsign: Five Star, | USA | AVCODES |
| 3096 | FIV | Citation Shares LLC | Callsign: Five Star, Name changed to Citationshares LLC | USA | AVCODES |
| 3097 | FIV | Aerostar, Inc. | Callsign: Fivestar, | USA | AVCODES |
| 3098 | FIV | Citationshares LLC | Callsign: Five Star, Name changed to Citation Shares LLC | USA | AVCODES |
| 3099 | FIV | Citationshares | | | ICAO1 |
| 3100 | FIVB | FIVE BROTHERS INC (5 BROTHERS INC) | | | SCAC3 |
