| Acronym | Meaning |
| MZFW | MMZFWMaximum Zero Fuel Weight |
| FTA | Fatigue Test Article |
| ESTL | Electronic Systems Test Laboratory |
| GOR | GrGORGround Operations Review |
| EVO | Engineering Verification Order |
| TP | Transition Period (T.P. Preferred) |
| OA | Overall |
| VP | Shuttle Payloads (KSC VO Dir. |
| PSIG | Propulsion Systems Integration Group |
| FCL | Freon Coolant Line |