| 1001 | ECPX | *EQUITY CO-OPERATIVE PACKING CO. | | | PWRC |
| 1002 | ECPX | *ETHYL CORP. | | | PWRC |
| 1003 | ECPX | *E.C.C. AMERICA, INC. | | | PWRC |
| 1004 | ECPX | ECC America | | | RSRV |
| 1005 | ECPX | ETHYL CORP | | | SCAC3 |
| 1006 | ECPX | ECOPLAST CORPORATION | | | SCAC4 |
| 1007 | ECQ | Eco Air Limited | Callsign: Skybridge, | WAN | AVCODES |
| 1008 | ECQ | Eco Air | | | ICAO1 |
| 1009 | ECQX | Degussa Engineered Carbons LP | added 4/2003; 7/2005 | | NAKINA |
| 1010 | ECQX | Engineered Carbons, Inc. | added 10/1995; 7/2000; eliminated 4/2003 | | NAKINA |
| 1011 | ECQX | Engineered Carbons, Inc. | added 10/95; 7/2000 | | NRHS |
| 1012 | ECQX | DEGUSSA ENGINEERED CARBONS INC. | | | PWRC |
| 1013 | ECQX | Engineered Carbons | | | RSRV |
| 1014 | ECQX | DEGUSSA ENGINEERED CARBONS LP | | | SCAC4 |
| 1015 | ECR | Energia Creadora, S.A. de C.V. | Callsign: Energia, | MEX | AVCODES |
| 1016 | ECR | Euro Cargo Rail | | F | TRAFFIC |
| 1017 | ECR | Euro Cargo Rail | | FR | VKM |
| 1018 | ECRA | ELITE CLEAN ROOM SERVICES | | | SCAC4 |
| 1019 | ECRC | E C R CO | | | SCAC3 |
| 1020 | ECRD | ECR ENTERPRISES LTD | | | SCAC4 |
| 1021 | ECRO | EAST COAST RESOURCES LLC | | | SCAC4 |
| 1022 | ECRP | EASTERN COURIER CORPORATION | | | SCAC4 |
| 1023 | ECRR | ECKHART, R & R TRUCKING | | | SCAC3 |
| 1024 | ECRR | EAST COAST TRANSPORT INC | | | SCAC4 |
| 1025 | ECRS | EXCLUSIVE COURIER SERVICE | | | SCAC3 |
| 1026 | ECRX | Econo-Rail Corp. | 7/2000-7/2005 (not listed) | | NAKINA |
| 1027 | ECRX | Econo-Rail Corp. | Jul-00 | | NRHS |
| 1028 | ECRX | *ECONO-RAIL CORPORATION | | | PWRC |
| 1029 | ECRX | +KINDER MORGAN PETCOKE, LP | | | PWRC |
| 1030 | ECRX | Econo-Rail Corporation | | | RSRV |
| 1031 | ECRX | TRANSGLOBAL SOLUTIONS INC | | | SCAC4 |
| 1032 | ECRZ | NORFOLK SOUTHERN [CONSOLIDATED RAIL CORP.] | | | PWRC |
| 1033 | ECRZ | Conrail (Norfolk Southern) | | | RSRV |
| 1034 | ECRZ | NORFOLK SOUTHERN RAILWAY COMPANY (N | | | SCAC4 |
| 1035 | ECS | Executive Aircraft Charter And Charter Services Ltd. | Callsign: Echo, | IRL | AVCODES |
| 1036 | ECS | Air Ecosse | IATA: WG, Callsign: Air Ecosse, | GB | AVCODES |
| 1037 | ECS | Air Ecosse Ltd | IATA: SM, Callsign: Ecosse Air, Founded in 1977 | GB | AVCODES |
| 1038 | ECS | Executive Aircraft Charter and Charter Services | | | ICAO1 |
| 1039 | ECS | EUROVIA CS, a. s. | | CZ | VKM |
| 1040 | ECSA | EASTMED COMPANY S A | | | SCAC4 |
| 1041 | ECSC | EXPRESS CARGO SERVICE COMPANY LTD | | | SCAC3 |
| 1042 | ECSC | EC SERVICE EXPRESS INC | | | SCAC4 |
| 1043 | ECSD | EAST COAST DISTRIBUTION SERVICE INC | | | SCAC3 |
| 1044 | ECSE | ECLIPSE MARITIME INC. | | | SCAC3 |
| 1045 | ECSF | EAST COAST SPECIALIZED HAULING LLC | | | SCAC4 |
| 1046 | ECSG | ENVIRONMENTAL CROSSINGS INC | | | SCAC4 |
| 1047 | ECSJ | EASTCOAST CONTAINER SERVICES CORP | | | SCAC4 |
| 1048 | ECSK | EAST COAST SKIPPERS | | | SCAC3 |
| 1049 | ECSK | ENTOURAGE CONTRACTING SERVICES INC | | | SCAC4 |
| 1050 | ECSL | EASTERN C SHIPPING LTD | | | SCAC3 |
| 1051 | ECSL | EASTERN C SHIPPING LTD | | | SCAC4 |
| 1052 | ECSM | ENCORE SALES LTD | | | SCAC4 |
| 1053 | ECSN | ECOSHIP SENDIRIAN BERHAD | | | SCAC4 |
| 1054 | ECSO | ELGIN CAR SHOPS | | | SCAC4 |
| 1055 | ECSP | EXPRESS CONSOLIDATION SYSTEMS CORP | | | SCAC4 |
| 1056 | ECSR | EAST COAST STARTER DRIVE | | | SCAC3 |
| 1057 | ECSS | E C SERVICES | | | SCAC4 |
| 1058 | ECST | ECS TRUCKING | | | SCAC3 |
| 1059 | ECSU | BALTICON S.A. | | PL | BIC |
| 1060 | ECSU | LLC EURO-ASIAN CONTAINER SERVICE | | | SCAC4 |
| 1061 | ECSX | General American Transportation Corp. | 1/1952; eliminated 10/1953 | | NAKINA |
| 1062 | ECSX | Scurlock Tank Car Co. | 1/1950 | | NAKINA |
| 1063 | ECSX | General American Transportation Corp. | 1/52; eliminated 10/53 | | NRHS |
| 1064 | ECSX | *SCURLOCK TANK CAR CO. | | | PWRC |
| 1065 | ECSX | *GENERAL AMERICAN TRANSPORTATION CORP | | | PWRC |
| 1066 | ECSY | ECONOMY COATING SYSTEMS | | | SCAC4 |
| 1067 | ECSZ | ELGIN CROP SERVICE COMPANY, INC. | | | PWRC |
| 1068 | ECT | East Coast Airways (Pty) Ltd. | Callsign: Eastway, | ZA | AVCODES |
| 1069 | ECT | Eurocommander, S.A. | Callsign: Eurocommander, ICAO designator changed to ERA | E | AVCODES |
| 1070 | ECT | East Coast Airways | | | ICAO1 |
| 1071 | ECT | Edinburgh Corporation Transport Department | City: Edinburgh | GB | TRAFFIC |
| 1072 | ECTA | ELKHART CENTRAL TRANSFER INC | | | SCAC3 |
| 1073 | ECTA | EXCEL TRANSPORT SERVICES | | | SCAC4 |
| 1074 | ECTB | East Chattanooga Belt Ry. Co. | 7/2005 | | NAKINA |
| 1075 | ECTB | EAST CHATTANOOGA BELT RAILWAY | | | PWRC |
| 1076 | ECTB | East Chattanooga Belt Railway | | | RSRV |
| 1077 | ECTB | EAST CHATTANOOGA BELT RAILWAY COMPA | | | SCAC4 |
| 1078 | ECTC | East Texas Central R.R. | added 7/1996 | | NAKINA |
| 1079 | ECTC | East Texas Central R.R. | added 7/96 | | NRHS |
| 1080 | ECTC | EAST TEXAS CENTRAL RAILROAD | | | PWRC |
| 1081 | ECTC | EAST COAST TRANSPORT COMPANY, INCOR | | | SCAC3 |
| 1082 | ECTC | E C TRANSPORT INC | | | SCAC4 |
| 1083 | ECTD | EAST COAST TRANSPORT | | | SCAC4 |
| 1084 | ECTE | ELECTRIC CITY TRANSFER & STORAGE IN | | | SCAC3 |
| 1085 | ECTE | ELECTRIC CITY TRANSFER & STORAGE IN | | | SCAC4 |
| 1086 | ECTF | E C TRANSFER CORP | | | SCAC4 |
| 1087 | ECTF | EC Transporturi Feroviare SRL | | RO | VKM |
| 1088 | ECTI | EAST COAST TRUCK LEASING CO INC | | | SCAC3 |
| 1089 | ECTI | E C TRANSPORT INC | | | SCAC4 |
| 1090 | ECTJ | ESSENTIAL COIL TUBING SERVICES | | | SCAC4 |
| 1091 | ECTK | EAST CONTINENTAL TRUCKING INC | | | SCAC4 |
| 1092 | ECTL | EAST COAST TRAILERS | | | SCAC3 |
| 1093 | ECTM | E & C TRANSPORT INC | | | SCAC3 |
| 1094 | ECTM | E C TRANSPORTATION INC | | | SCAC4 |
| 1095 | ECTN | EAST COAST TRANSPORTATION CO | | | SCAC3 |
| 1096 | ECTN | EAST CAN TRANSPORT SERVICES LTD | | | SCAC4 |
| 1097 | ECTO | ECONOMY TRANSPORT, INC | | | SCAC3 |
| 1098 | ECTO | ECONOMY TRANSPORT INC | | | SCAC4 |
| 1099 | ECTP | EAST COAST TRANSPORT | | | SCAC3 |
| 1100 | ECTP | EC TRANSPORT INC | | | SCAC4 |
