| 1 | ECD | Ecotour | Callsign: Ecotour, | MEX | AVCODES |
| 2 | ECD | Ecotour | | | ICAO1 |
| 3 | ECDE | ELITE COURIER & DELIVERY SERVICES | | | SCAC4 |
| 4 | ECDI | E C D INC | | | SCAC3 |
| 5 | ECDL | EXPEDITED COURIER AND DISTRIBUTION | | | SCAC4 |
| 6 | ECDN | EC DISTRIBUTION INC | | | SCAC4 |
| 7 | ECDO | EVERTS COMMERCIAL TRANSPORT INC | | | SCAC3 |
| 8 | ECDP | EPCO CARBON DIOXIDE PRODUCTS INC | | | SCAC4 |
| 9 | ECDS | ECONOMY DELIVERY SERVICE | | | SCAC3 |
| 10 | ECDS | ENCHANTED DESIGNS LTD | | | SCAC4 |
| 11 | ECDU | ECDC ENVIRONMENTAL, LC | | | PWRC |
| 12 | ECDU | ECDC Environmental | | | RSRV |
| 13 | ECDX | Ethyl Corp. | added 4/2006 | | NAKINA |
| 14 | ECDX | Ethyl Petroleum Additives, Inc. | added 1/1985; 1/1994-7/2005; eliminated 1/2006 | | NAKINA |
| 15 | ECDX | Edwin Cooper, Inc. | added 4/1979; 1/1980; eliminated 1/1985 | | NAKINA |
| 16 | ECDX | Edwin Cooper, Inc. | added 4/79; 1/80; eliminated 1/85 | | NRHS |
| 17 | ECDX | Ethyl Petroleum Additives, Inc. | added 1/85; 1/94-7/2000 | | NRHS |
| 18 | ECDX | *EDWIN COOPER, INC. | | | PWRC |
| 19 | ECDX | +ETHYL CORP. [ETHYL PETROLEUM ADDITIVES, INC.] | | | PWRC |
| 20 | ECDX | Edwin Cooper | | | RSRV |
| 21 | ECDX | ETHYL PETROLEUM ADDITIVES, INC. | | | SCAC4 |
| 22 | ECDY | EURO-CAN DELIVERY SERVICES | | | SCAC4 |
