| Acronym | Meaning |
| FSF | First Static Firing |
| MIOS | Multi-IMU Operation System |
| STDN | Space Tracking And Data Network |
| LOS | Loss Of Sync |
| EMCI | Engineering Model Configuration Inspection |
| TSO | Time Since Overhaul |
| S | Second (Astronomical Tables) |
| FDM | Flight Data Manager |
| DCSP | Digital Control Signal Processor |
| TCS | Thermal Control System (Subsystem) |