| Acronym | Meaning |
 | DEG | Degree |
| TAC/RA | TACAN Radar Altimeter |
| SSEOS | Space Shuttle Engineering And Operations Support |
| LFOP | Landing And Ferry Operations Panel |
| QPL | Qualified Products List |
| SEM | Scanning Electron Microscope |
| SID | Simulator Interface Devices |
| SAM | Shuttle Attachment ManiPulator |
| ECI | Earth Centered Inertia (inertials) |
| PCS | Primary Coolant System |
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