| 601 | FBCX | *FOLEY BUTANE CO., INC. | | | PWRC |
| 602 | FBCY | FIBER CYCLE | | | SCAC3 |
| 603 | FBDC | Ford County Historical R.R. Preservation Foundation | 1/1994-7/2005 | | NAKINA |
| 604 | FBDC | Ford County Historical R.R. Preservation Foundation | 1/94-7/2000 | | NRHS |
| 605 | FBDC | FORD COUNTY HISTORICAL RAILROAD PRESERVATION FOUNDATION | | | PWRC |
| 606 | FBDC | Ford County Historical Railroad Preservation Foundation | | | RSRV |
| 607 | FBDC | FORD COUNTY HISTORICAL RAILROAD PRE | | | SCAC3 |
| 608 | FBDK | Falsterbanen | Real: FB, 1872 - 1893 | DK | TRAFFIC |
| 609 | FBDN | FINER BY DESIGN | | | SCAC4 |
| 610 | FBDT | FIREBIRD TRANSPORTATION | | | SCAC4 |
| 611 | FBDV | FIBERS DIVISION TRUCKING (DIV OF AL | | | SCAC3 |
| 612 | FBE | Pan African Airlines Leasing Company Ltd | Callsign: Afribee, | MUS | AVCODES |
| 613 | FBE | Ferropolis Bergbau- und Erlebnisbahn e.V. | Gräfenhainichen | D | privat-bahn.de |
| 614 | FBEA | FIREBALL EXPRESS INC | | | SCAC4 |
| 615 | FBEC | FLORABEC INC | | | SCAC4 |
| 616 | FBED | FLAT-BED SERVICES INC | | | SCAC4 |
| 617 | FBEI | FIBERTEX INDUSTRIES INC | | | SCAC3 |
| 618 | FBEN | F & B ENGINEERINNG INC | | | SCAC3 |
| 619 | FBEP | FAIRBURN EXPRESS INC | | | SCAC4 |
| 620 | FBEQ | FLORIDA BEAUTY EXPRESS INC | | | SCAC4 |
| 621 | FBET | FRANKLIN, BEN TRANSPORTATION INC | | | SCAC3 |
| 622 | FBF | Fine Air Services, Inc. | Callsign: Fine Air, Desigantor FB recalled by IATA. Name changed from Fine Airlines, Inc. | USA | AVCODES |
| 623 | FBF | Fine Air Services, Inc. | IATA: FB, Callsign: Fine Air, IATA Prefix: 340, Desigantor FB recalled by IATA. Name changed from Fine Airlines, Inc. | USA | AVCODES |
| 624 | FBF | Fine Airlines, Inc. | IATA: FB, Callsign: Fine Air, IATA Prefix: 340, Name changed to Fine Air Serivces, Inc. | USA | AVCODES |
| 625 | FBF | Fine Airlines | | | ICAO1 |
| 626 | FBF | Frenzel-Bau GmbH&Co. KG | | DE | VKM |
| 627 | FBFA | FARMER BOY FUEL SUPPLY | | | SCAC4 |
| 628 | FBFC | FRANK BROS FUEL CORP | | | SCAC4 |
| 629 | FBFE | FLATBED FREIGHT EXPRESS COMPANY | | | SCAC3 |
| 630 | FBFI | FASTBALL FREIGHT INC | | | SCAC4 |
| 631 | FBFO | FEBRUARY FOURTEEN INC | | | SCAC4 |
| 632 | FBFS | FBF SERVICES CORP | | | SCAC4 |
| 633 | FBFU | MARINE TRANSWORLD EQUIP. CORP. | | | PWRC |
| 634 | FBFU | Marine Transworld Equipment Corporation | | | RSRV |
| 635 | FBG | Fleet Air BG | Callsign: Fleet Big, | BG | AVCODES |
| 636 | FBGP | F B G TRANSPORT | | | SCAC3 |
| 637 | FBGS | FOWLER BOTTLE GAS SERVICE INC | | | SCAC3 |
| 638 | FBGT | F B G TRANSPORT | | | SCAC3 |
| 639 | FBHH | FRAN-BAR HEAVY HAUL INC | | | SCAC4 |
| 640 | FBIA | FORMULA BRANDS INC | | | SCAC4 |
| 641 | FBIB | FREIGHT BOOK INC | | | SCAC4 |
| 642 | FBIC | F & B INC | | | SCAC4 |
| 643 | FBIF | FBI FLOWERS | | | SCAC4 |
| 644 | FBIK | FERRER BROKERS INC | | | SCAC4 |
| 645 | FBIN | FEDERAL BUILDERS INC | | | SCAC3 |
| 646 | FBIO | FARM BOY INC | | | SCAC4 |
| 647 | FBIQ | FAITH BROADCASTING INC | | | SCAC4 |
| 648 | FBIR | F B I TOURS | | | SCAC3 |
| 649 | FBIT | FBT TRUCKING | | | SCAC3 |
| 650 | FBIU | FLORENS ASSET MANAGEMENT COMPANY LIMITED | | HK | BIC |
| 651 | FBIU | FLORENS CONTAINER SERVICES COMPANY | | | SCAC4 |
| 652 | FBJ | Baby Jet Airlines Limied | Callsign: Baby Jet, | GH | AVCODES |
| 653 | FBJL | FLIGHTIME BUSINESS JETS LLC | | | SCAC4 |
| 654 | FBJT | FORREST, B J TRUCKING INC | | | SCAC4 |
| 655 | FBKC | FABRI-KAL CORPORATION | | | SCAC4 |
| 656 | FBKI | FAIRBANKS FUEL SUPPLY INC | | | SCAC3 |
| 657 | FBKL | FASTBREAK LOGISTICS INC | | | SCAC4 |
| 658 | FBKR | FREE BULKERS S A | | | SCAC4 |
| 659 | FBL | Food Brokers Ltd. | Callsign: Food, | GB | AVCODES |
| 660 | FBL | Food Brokers Ltd. | Callsign: Foodbrojer, | GB | AVCODES |
| 661 | FBL | Fly Benghazi | | LAR | AVCODES |
| 662 | FBL | Federal Barge Lines, Inc. | 7/1954-10/1966 & 1/1975 | | NAKINA |
| 663 | FBL | Federal Barge Lines, Inc. | 10/57-10/66 & 1/75 | | NRHS |
| 664 | FBL | FEDERAL BARGE LINES, INC. | | | PWRC |
| 665 | FBLC | FARRELL, | | | SCAC4 |
| 666 | FBLG | FABRIQUE, BILL TRUCKING | | | SCAC3 |
| 667 | FBLI | FEDERAL BARGE LINES INC | | | SCAC3 |
| 668 | FBLL | FRONTIER BUS LINES LTD | | | SCAC3 |
| 669 | FBLO | FLETES INTERNACIONALES BALO SA DE C | | | SCAC4 |
| 670 | FBLQ | FISHER BROS LOGISTICS INC | | | SCAC4 |
| 671 | FBLT | FAREL TRANSPORT INC | | | SCAC3 |
| 672 | FBLU | FLORENS ASSET MANAGEMENT COMPANY LIMITED | | HK | BIC |
| 673 | FBLU | FLORENS CONTAINER SERVICES COMPANY | | | SCAC4 |
| 674 | FBMI | FOUR (4) BOYS MFG INC | | | SCAC4 |
| 675 | FBMN | FLETES BRAYANT | | | SCAC4 |
| 676 | FBMS | FRUIT BELT MOTOR SERVICE, INC | | | SCAC3 |
| 677 | FBMS | FAB MASTERS COMPANY INC | | | SCAC4 |
| 678 | FBMT | F B M TRUCKING INC | | | SCAC3 |
| 679 | FBMU | CIE MARITIME BELGE S.A. | | | PWRC |
| 680 | FBMU | CIE Maritime Belge | | | RSRV |
| 681 | FBMU | COMPAGNIE MARITIME BELGE S.A. | | | SCAC3 |
| 682 | FBMX | Fayblock Materials | added 10/1996; eliminated 4/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 683 | FBMX | Fayblock Materials | added 10/96; eliminated 4/97; 7/2000 | | NRHS |
| 684 | FBMX | FAYBLOCK MATERIALS | | | PWRC |
| 685 | FBMX | Fayblock Materials | | | RSRV |
| 686 | FBMX | FAYBLOCK MATERIALS | | | SCAC4 |
| 687 | FBN | Afrique Airlines, S.A. | IATA: X5, Callsign: Afrique-Benin, Founded in 2002. Commenced operations in 2003. Ceased operations during 2006. | DY | AVCODES |
| 688 | FBN | Florida Air Transport, Inc. | Callsign: Florida Transport, | USA | AVCODES |
| 689 | FBND | F B N DRAYAGE | | | SCAC3 |
| 690 | FBNJ | F B N TRANSPORT | | | SCAC3 |
| 691 | FBNK | FREIGHT BROKERAGE NETWORK | | | SCAC4 |
| 692 | FBO | Carroll Aircraft Corporation Plc | Name changed to TAG Farnborough Airport Ltd. | GB | AVCODES |
| 693 | FBO | TAG Farnborough Airport Ltd. | Name changed from Carroll Aircraft Corporation Plc | GB | AVCODES |
| 694 | FBO | TAG Farnborough Airport | | | ICAO1 |
| 695 | FBOA | FREIGHT BROKERS OF AMERICA INC | | | SCAC4 |
| 696 | FBOC | FLEMING BROTHERS OIL CO | | | SCAC4 |
| 697 | FBOT | FOUR BROTHERS TRANSPORTATION CO | | | SCAC3 |
| 698 | FBOX | TTX Co. | added 10/2003; 7/2005 | | NAKINA |
| 699 | FBOX | TTX Co. | added 10/2003 | | NAKINA |
| 700 | FBOX | TTX CO. | | | PWRC |
