| Acronym | Meaning |
| KEAS | Knots Equivalent Airspeed |
| IFA | In-FlightAnalyses |
| FT | Feet |
| IV | Initial Velocity |
| PCD | Procurement Control Document |
| OFS | Orbital (Orbiter) Flight System |
| NCR | Nonconformance/Failure Report |
| PHA | Preliminary Hazard Analyses |
| RIC | Resistance Inductance And Capacitance |
| OPOV | Oxidizer Preburner Oxidizer Valve |