| 1 | NYH | New York Helicopter Corp. | Callsign: New York, Designator HD recalled by IATA | USA | AVCODES |
| 2 | NYH | New York Helicopters Corp. | IATA: HD, Callsign: New York, Designator HD recalled by IATA | USA | AVCODES |
| 3 | NYH | New York Helicopter | | | ICAO1 |
| 4 | NYHH | NEW YORK HAULING & HOISTING CO INC | | | SCAC3 |
| 5 | NYHI | NISI YIRE H & I CORP | | | SCAC4 |
| 6 | NYHO | NORTH YORK HYDRO | | | SCAC3 |
