| 1 | NCY | Nancy Air Transport Executive | Callsign: Hermes, Name changed from DK Flight | F | AVCODES |
| 2 | NCY | DK Flight | Callsign: Hermes, Name changed to Nancy Air Transport Executive | F | AVCODES |
| 3 | NCYR | Nash County R.R. Corp. | added 4/1986; eliminated 4/1993; 1/1994 (not listed); 7/2000-7/2005; added 7/2008 | | NAKINA |
| 4 | NCYR | Nash County R.R. Corp. | added 4/86; eliminated 4/93; 1/94-7/2000 | | NRHS |
| 5 | NCYR | NASH COUNTY RAILROAD CORPORATION | | | PWRC |
| 6 | NCYR | Nash County Railroad | | | RSRV |
| 7 | NCYR | NASH COUNTY RAILROAD CORP | | | SCAC3 |
| 8 | NCYS | NANCYS TOURS | | | SCAC3 |
| 9 | NCYX | National Cylinder Gas, Division of Chemetron Corp. | added 1/1960; 4/1961-1/1975; eliminated 4/1978 | | NAKINA |
| 10 | NCYX | National Cylinder Gas Co. | added 7/1954; 7/1954-10/1957; eliminated 10/1959 | | NAKINA |
| 11 | NCYX | National Cylinder Gas Co. | 10/57; eliminated 10/59 | | NRHS |
| 12 | NCYX | National Cylinder Gas, Division of Chemetron Corp. | added 1/60; 4/61-1/75; eliminated 4/78 | | NRHS |
| 13 | NCYX | NATIONAL CYLINDER GAS, DIV. CHEMETRON CORP. | | | PWRC |
| 14 | NCYX | NATIONAL CYLINDER GAS | | | SCAC3 |