| Acronym | Meaning |
| SP-FGS | Flight And Ground Systems Office (KSC Shuttle) |
| IMU | Internal Measurement Unit |
| UBIC | Universal Bus Interface Controller |
| DMC | Data Management ComPuter |
| MPL | Minimum Power Level (65%) |
| V | Voice |
| DUPLXR | Duplexer |
| QRE | Quick-Reaction Estimate |
| RTG | Radioisotope Thermoelectric Generator |
| TCV | Thrust Chamber Valve |