| 1 | EHD | E H Darby Aviation | Callsign: Platinum Air, | USA | AVCODES |
| 2 | EHD | E H Darby Aviation | | | ICAO1 |
| 3 | EHD | Eberle Hald Handel und Dienstleistungen Dresden GmbH | | DE | VKM |
| 4 | EHDC | ETHANOL PRODUCTS LLC | | | SCAC4 |
| 5 | EHDX | Erman-Howell Division, Luria Steel and Trading Corp. | added 7/1967; 4/1970-1/1980; eliminated 5/1983; 1/1994 (not listed) | | NAKINA |
| 6 | EHDX | Erman-Howell Division, Luria Steel and Trading Corp. | added 7/67; 4/70-1/80; eliminated 5/83 | | NRHS |
| 7 | EHDX | Erman-Howell Division, Luria Steel and Tubing Corp. | Jan-94 | | NRHS |
| 8 | EHDX | ERMAN HOWELL DIV. LURIA STEEL & TRADING CORP. | | | PWRC |
| 9 | EHDX | Luria Steel and Trading Corporation Erman-Howell Division | | | RSRV |
