| Acronym | Meaning |
| TMO | Test Manufacturing Order |
| PFRT | Preliminary Flight Rating Test |
| MACDS | Monitor And Control Display System |
| OMS | Orbital Maneuvering System |
| TTL | Transistor-Transistor Logic |
| E/W | Energy Over Weight |
| SPII | Shuttle Program Implementation Instruction |
| TM | TrafficModel |
| DI | Data Integrator |
| MAUS | Messenschafteliche Autonome Experiment Unter |