| 1 | JCS | Jetclub AG | IATA: 0J, Callsign: Jetclub, | CH | AVCODES |
| 2 | JCS | Jet Charter Service, Inc. t/a Jet 24 | IATA: TJ, | USA | AVCODES |
| 3 | JCS | Jetclub | IATA: 0J | | ICAO1 |
| 4 | JCSD | JCS SPECIALIZED (JCS SPECIAL | | | SCAC4 |
| 5 | JCSI | JCS ENTERPRISES INC | | | SCAC4 |
| 6 | JCSP | JC'S EXPRESS INC | | | SCAC4 |
| 7 | JCSS | J C'S XPRESS INC | | | SCAC4 |
| 8 | JCST | JACOBS ENTERPRISE LLC | | | SCAC4 |
| 9 | JCSX | Heritage Operating L.P. | added 7/1997; 7/2000-7/2005 | | NAKINA |
| 10 | JCSX | Sawyer Gas of Jacksonville, Inc. | added 4/1984; 1/1994; eliminated 7/1997 | | NAKINA |
| 11 | JCSX | Sawco, Inc. | added 1/1984; eliminated 4/1984 | | NAKINA |
| 12 | JCSX | Sawyer Gas of Jacksonville, Inc. | added 1/1975; 1/1975-1/1980; eliminated 1/1984 | | NAKINA |
| 13 | JCSX | Sawyer Slade Gas of Jacksonville, Inc. | added 10/1974; eliminated 1/1975 | | NAKINA |
| 14 | JCSX | Sawyer Slade Gas of Jacksonville, Inc. | added 10/74; eliminated 1/75 | | NRHS |
| 15 | JCSX | Sawyer Gas of Jacksonville, Inc. | added 1/75; 1/75-1/80 | | NRHS |
| 16 | JCSX | Sawco, Inc. | eliminated 4/84 | | NRHS |
| 17 | JCSX | Sawyer Gas of Jacksonville, Inc. | added 4/84; 1/94; eliminated 7/97 | | NRHS |
| 18 | JCSX | Heritage Operating L.P. | added 7/97; 7/2000 | | NRHS |
| 19 | JCSX | *SAWYER GAS OF JACKSONVILLE INC | | | PWRC |
| 20 | JCSX | +HERITAGE OPERATING L.P. [SAWYER GAS OF JACKSONVILLE] | | | PWRC |
| 21 | JCSX | Sawyer Gas of Jacksonville (Amerigas Propane) | | | RSRV |
