| Acronym | Meaning |
| EWR | Engineering Work Request |
| RC | Recurring Cost |
| SRT | Shuttle Requirements Traceability |
| FIFO | First In-First Out (High Speed Data Buffers) |
| SFPS | Single Failure Point Summary |
| FM/PM | Frequency Modulation/Phase Modulation |
| MCIU | Manipulator Controller Interface Unit |
| EMK | Emergency Medical Kit |
| LS | Limit Switch |
| LRU | Line Replaceable Unit |