| Acronym | Meaning |
| STSG | Shuttle Test Group |
| SSEOS | Space Shuttle Engineering And Operations Support |
| RCSC | Reaction Control Subsystem Controller |
| EHP | EffectiveHorsepower |
| CI | Certification Inspection |
| GUID | Guidance |
| PIC | Payload Integration Center |
| MTG | Mounting |
| HMP | Hydrozene Monopropeflant (RCS Propellant) |
| OM | Orbital Maneuvering Engine |