| 1 | NJS | National Jet Systems Pty. Ltd. | IATA: NC, Callsign: National Jet, Name changed to National Jet Systems Pty. Ltd. t/a Cobham Aviation Services Australia - Airline Services w.e.f. 13 May 2009. Designator NC reinstated by IATA | AUS | AVCODES |
| 2 | NJS | Cobham Aviation Services Australia | IATA: NC, Name changed from National Jet Systems Pty. Ltd. t/a Cobham Aviation Services Australia - Airline Services w.e.f. 13 May 2009. Designator NC recalled by IATA | AUS | AVCODES |
| 3 | NJS | Cobham Aviation Services Australia | Name changed from National Jet Systems Pty. Ltd. Designator NC recalled by IATA | AUS | AVCODES |
| 4 | NJS | National Jet Systems | IATA: NC | | ICAO1 |
| 5 | NJSP | New Jersey State Police | | USA | TRAFFIC |
| 6 | NJSR | N J S TRANSPORT CO INC | | | SCAC3 |
| 7 | NJST | N J SPECIAL TRANSPORTATION SERVICES | | | SCAC3 |
| 8 | NJST | N J S TRUCKING | | | SCAC4 |
| 9 | NJST | North Jersey Surface Transit | | USA | TRAFFIC |
