| AMS-Spec | Bell Helicopter - Textron |
| Boeing | Caterpillar |
| Embraer | General Dynamics |
| GKN | Gulfstream Aerospace |
| Honda Aircraft Company | Lear Jet / Bombardier |
| Lockheed Martin | Middle River Aircraft Systems |
| Mil-Spec | Nadcap Aerospace Quality Systems |
| Nadcap Heat Treating | Northrup Grumman |
| Raytheon | Rockwell |
| Saberliner | United Space Alliance |
| United Technologies USBI |
Vickers |
