| Acronym | Meaning |
| TWT | Trisonic Wind Tunnel (Rockwell) |
| LSA | Launch Services Agreement |
| TPAD | Trunnion Pin Attachment Device |
| OHGVT | Orbiter Horizontal Ground Vibration Test |
| O-NAV | Onboard Navigation |
| CB | Circuit Breaker |
| N | North |
| OFTR | Orbital Flight Test Requirement |
| TM | TrafficModel |
| SLAR | Side Looking Airborne Radar |