 |
| English | Thesaurus |
| Arab British Helicopters Co. | ABH (Egypt) |
| Army Helicopter Improvement Program | AHIP (USA) |
| Canadian Forces Utility Tactical Transport Helicopter programme | CFUTTH |
| Helicopter Advanced Rotor Program | HARP (USA) |
| Light Helicopter Turbine Engine Co. | LHTEC (USA) |
| McDonnell Douglas Helicopter Co. | MDHC (USA) |
| National Helicopter Services | NHS (Trinidad) |