| 701 | TASS | T & S TRANSPORTATION SYSTEMS INC | | | SCAC4 |
| 702 | TAST | T.A.S. TRUCKING, INC | | | SCAC3 |
| 703 | TAST | TIMMONS AND SON TRUCKING | | | SCAC4 |
| 704 | TASU | TANKSPAN LEASING LIMITED | | GB | BIC |
| 705 | TASU | TASTET | | | SCAC3 |
| 706 | TASU | TANKSPAN LEASING LTD | | | SCAC4 |
| 707 | TASV | TRANS AMERICAN SERVICES INC | | | SCAC3 |
| 708 | TASW | T A S TRANSPORT INC | | | SCAC3 |
| 709 | TASW | TA SERVICES INC | | | SCAC4 |
| 710 | TASX | Tasco, Inc. | added 4/1962; 7/1965; eliminated 10/1965 | | NAKINA |
| 711 | TASX | Transammonia, Inc. | added 4/1992; eliminated 7/1994 | | NAKINA |
| 712 | TASX | Transrail, Inc. | 1/1994; added 7/1994; 7/2000-7/2005 | | NAKINA |
| 713 | TASX | Tasco, Inc. | added 4/62; 7/65; eliminated 10/65 | | NRHS |
| 714 | TASX | Transammonia, Inc. | added 4/92; eliminated 7/94 | | NRHS |
| 715 | TASX | Transrail, Inc. | 1/94; added 7/94; 7/2000 | | NRHS |
| 716 | TASX | *TASCO, INC. | | | PWRC |
| 717 | TASX | +TRANSRAIL, INC. [TRANSAMMONIA, INC.] | | | PWRC |
| 718 | TASX | TransRail | | | RSRV |
| 719 | TASY | TRANSPORTES AMA SA DE CV | | | SCAC4 |
| 720 | TAT | T.A.T. European Airlines | IATA: VD, Callsign: TAT, Designator VD recalled by IATA. IATA designator changed from IJ | F | AVCODES |
| 721 | TAT | TAT European Airlines | IATA: IJ, Callsign: TAT, IJ prefix transfered to Air Liberte - Ops under TA | F | AVCODES |
| 722 | TAT | TACA Costa Rica Anonima | IATA: TI, Callsign: TACA-Costarica, Name changed from Transportes Aereos del Continente Americano - TACA Costa Rica | CR | AVCODES |
| 723 | TAT | Grupo TACA | | | ICAO1 |
| 724 | TATA | TRI A TRANSPORT INC | | | SCAC4 |
| 725 | TATB | TARA TRUCKING INCORPORATED | | | SCAC3 |
| 726 | TATB | TRI-AM TRANSPORT LLC | | | SCAC4 |
| 727 | TATC | TARANTOLA TRUCKING CO | | | SCAC3 |
| 728 | TATC | TARANTOLA TRUCKING CO INC | | | SCAC4 |
| 729 | TATD | TAYLOR TRUCKING INC | | | SCAC3 |
| 730 | TATD | TNT TRANSPORT INC | | | SCAC4 |
| 731 | TATE | TATE CO | | | SCAC3 |
| 732 | TATE | TATE TRANSPORTATION | | | SCAC4 |
| 733 | TATE | Tateyama Railway | | J | TRAFFIC |
| 734 | TATF | TANNERS TRANSFER & STORAGE OF VIRGI | | | SCAC3 |
| 735 | TATG | TATS CARTAGE INC | | | SCAC3 |
| 736 | TATG | TRANS-ART TRANSPORT AND STORAGE SER | | | SCAC4 |
| 737 | TATH | TARA TRUCKING INC | | | SCAC3 |
| 738 | TATH | TRANSPORTES TOTAL CARGO | | | SCAC4 |
| 739 | TATI | THOMAS, A TRANSFER OF SO CALIFORNIA | | | SCAC3 |
| 740 | TATJ | T & J TRUCKING INC | | | SCAC3 |
| 741 | TATN | TATONDUK OUTFITTERS LIMITED | | | SCAC4 |
| 742 | TATO | T N T TRUCKING | | | SCAC3 |
| 743 | TATP | TROPICAL AUTO TRANSPORT INC | | | SCAC3 |
| 744 | TATP | TREPANIER, ALAIN TRANSPORT LTEE | | | SCAC4 |
| 745 | TATQ | T & T TRUCKING INC | | | SCAC3 |
| 746 | TATR | TAYLOR & SON TRUCK LINES | | | SCAC3 |
| 747 | TATRA | | | CZ | TRAFFIC |
| 748 | TATU | TRINIDAD DISTILLERS LTD | | TT | BIC |
| 749 | TATU | TITANIC LTD | | | SCAC3 |
| 750 | TATU | TRINIDAD DISTILLERS LTD | | | SCAC4 |
| 751 | TATV | TAYLOR TRUCKING | | | SCAC3 |
| 752 | TATW | TRIPLE AAA TRUCKING COMPANY | | | SCAC3 |
| 753 | TATX | Tanco Transportation Corp. | added 7/1979; 1/1980; eliminated 4/1989 | | NAKINA |
| 754 | TATX | General Electric Railcar Services Corp. | 1/1994; eliminated 1/2000 | | NAKINA |
| 755 | TATX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 756 | TATX | Tanco Transportation Corp. | added 7/79; 1/80; eliminated 4/89 | | NRHS |
| 757 | TATX | General Electric Railcar Services Corp. | 1/94; eliminated 1/2000 | | NRHS |
| 758 | TATX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 759 | TATX | (NATX) GEN. ELECTRIC RAIL SERVICES CORP. [TANCO TRANSPORTATION CO.] | | | PWRC |
| 760 | TATX | Tanco Transportation Corporation | | | RSRV |
| 761 | TATX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 762 | TAU | Torosair | IATA: CN, Callsign: Torair, Ceased operations during 1990 | TR | AVCODES |
| 763 | TAU | Asociados Latinoamericanos de Transporte Aereo | Callsign: Aero Alta, | RCH | AVCODES |
| 764 | TAU | Transportes Aereos Tauro, S.A. de C.V. | Callsign: Transtauro, | MEX | AVCODES |
| 765 | TAU | Transportes Aereos Tauro | | | ICAO1 |
| 766 | TAUA | TRANSIT AIDE INC | | | SCAC3 |
| 767 | TAUA | TRANSPORTADORA LOCAL DE CRUCES SA D | | | SCAC4 |
| 768 | TAUD | TRANSPORT DAUPHIN | | | SCAC4 |
| 769 | TAUG | TAUGHANNOCK AVIATION CORPORATION | | | SCAC4 |
| 770 | TAUI | THOMAS AMUSEMENTS INC | | | SCAC4 |
| 771 | TAUK | TRUCK AMUCK | | | SCAC3 |
| 772 | TAUK | TAUKE TRANSFER | | | SCAC4 |
| 773 | TAUM | TRANSAMERICA TRANSPORT INC | | | SCAC4 |
| 774 | TAUN | TAUNTON STORAGE CO | | | SCAC3 |
| 775 | TAUO | TAYLORS LEASING INC | | | SCAC3 |
| 776 | TAUQ | TAURUS TRANSPORTATION | | | SCAC4 |
| 777 | TAUR | TAURUS TRANSPORT INC | | | SCAC3 |
| 778 | TAUR | TAURO CRISTAL S A DE C V | | | SCAC4 |
| 779 | TAUS | TAURUS NORTH AMERICAN | | | SCAC3 |
| 780 | TAV | Compania de Servicios Aereos Tavisa | Callsign: Tavisa, | E | AVCODES |
| 781 | TAV | Compania de Servicios Aereos Tavisa | | | ICAO1 |
| 782 | TAVC | TRAVEL CORNER INC | | | SCAC3 |
| 783 | TAVC | TRANSPORT SOMAVRAC INC | | | SCAC4 |
| 784 | TAVD | TACS SA DE CV | | | SCAC4 |
| 785 | TAVH | TRANSPORT ALLAN VACHON INC | | | SCAC3 |
| 786 | TAVH | TRANSPORT ALLAN VACHON INC | | | SCAC4 |
| 787 | TAVI | TAVI SYSTEM INC | | | SCAC4 |
| 788 | TAVJ | TARANTINO, VINCENT JOHN | | | SCAC3 |
| 789 | TAVK | TEAM ADVANTAGE INC | | | SCAC4 |
| 790 | TAVL | TRAVELITE TRANSFER | | | SCAC3 |
| 791 | TAVM | TRANSPORTS A V M (ACTON-VALE) INC | | | SCAC3 |
| 792 | TAVN | TRANSPORT ANDRE VIGNEAULT REGD | | | SCAC4 |
| 793 | TAVO | TRAVEL ONE INC | | | SCAC3 |
| 794 | TAVO | TRANSPORTES NATOS | | | SCAC4 |
| 795 | TAVQ | TAYLOR VAN & STORAGE CO | | | SCAC3 |
| 796 | TAVQ | TRANSPORTES A VELAZQUEZ | | | SCAC4 |
| 797 | TAVR | TRANSPORT ANDRE VIGNEAULT REGD | | | SCAC3 |
| 798 | TAVR | TRANS-AMERICA CARRIERS LLC | | | SCAC4 |
| 799 | TAVT | TRANSPORTES AVENTUREROS | | | SCAC4 |
| 800 | TAVY | TANSLEY ASSOCIATES ENVIRONMENTAL SC | | | SCAC4 |
