| Acronym | Meaning |
| EVS | Equipment VisibilitY System |
| LCU | Line Coupling Unit |
| PASS | Primary Avionics Software System |
| VRCS | Vernier Reaction Control System |
| LDR | LowData Rate |
| L/S | LLoad SYstem |
| GYM | Guaymas |
| SPIDPO | Shuttle Payload Integration And Development Progra |
| IMP | Initial Memory Protection |
| GPC | General-purpose Computer |