| Acronym | Meaning |
| GCTS | Ground Communication(s) Tracking System |
| SCF | Sunnyvale Control Facility |
| VV | Vent Valve |
| EVF | Equipment Visibility File |
| PLSS | Primary Life SuPport Subsystem |
| WX | Weather |
| ECR | Engineering Change Request |
| T-0 | Time Zero |
| CSE | Configuration Switching EquiPment |
| ESTEC | European Space Technology Center |