| Acronym | Meaning |
| FRE | Flight Related Element |
| PCCE | Payload Common Communication Equipment |
| FPS | Frames Per Second |
| OFT | Orbital Flight Test |
| LST | Local Standard Time |
| EXO | Experiment Operator (in Spacelab) |
| UNDK | Undock |
| NOES | National Operational Environmental Satellite Serv. |
| MELI | Minimum Equipment List Index |
| SSM | ESpace Shuttle Main Engine |