| Acronym | Meaning |
| PFC | Preliminary Flight Certification |
| VPF | Vertical Processing Facility |
| PTA | Propulsion Test Article |
| DA | Distribution Assembly |
| OCDU | Optics Coupling Data Unit (G&N) |
| RT | Rate |
| D/L | Data Link |
| CSF | Central Supply Facility |
| POI | Propellant Quantity Indicator |
| FIIG | Federal Item Identification Guide |