| Acronym | Meaning |
| DDM | Discrete Data Management |
| S | TRKStar Tracker |
| CB/DC | Circuit Breaker (dc Only) |
| RS | Redundancy Status |
| AGOSS | Automated Ground Operations Scheduling System |
| LLP | Launch And Landing Project |
| SOCS | Subsystem Operation And Checkout System |
| VIS | Verification Information System |
| MTBMA | Mean Time Between Maintenance Action |
| LT | Lead Time |