| Acronym | Meaning |
| MTVC | Manual Thrust Vector Control |
| OA | Operational Aft (DSC Or MOM) |
| S/U | Set Up |
| CCVA | Chamber Coolant Valve Actuator |
| CIG | Communications And Interface Group |
| SL | Shelf Life |
| HEMI | Hemispherical (S-Band Antenna) |
| CLNR | Cleaner |
| MTS | Master Timing System |
| SHRD | Shroud |