| 1 | EKC | East Kansas City Aviation, Inc. | Callsign: Blue Goose, | USA | AVCODES |
| 2 | EKC | East Kansas City Aviation | | | ICAO1 |
| 3 | EKCO | EKCO METALS | | | SCAC3 |
| 4 | EKCO | EKCO METALS | | | SCAC4 |
| 5 | EKCR | ECKSTINE, CHARLES R | | | SCAC3 |
| 6 | EKCR | EASTMARK ASSOCIATES INC | | | SCAC4 |
| 7 | EKCU | VAN DEN BOSCH TRANSPORTE GMBH | | A | BIC |
| 8 | EKCU | FRIEDRICH EISENKECK SILOTRANSPORTE | | | SCAC3 |
| 9 | EKCU | SILO-TANK TRANSPORTE GMBH | | | SCAC4 |
| 10 | EKCX | Eastman Kodak Co. | 7/1935-1/1952; eliminated 7/1953 | | NAKINA |
| 11 | EKCX | Eastman Kodak Co. | 4/38-1/52 | | NRHS |
| 12 | EKCX | EASTMAN KODAK CO. | | | PWRC |
| 13 | EKCZ | EAST KENTUCKY COAL DOCKS | | | PWRC |
