| Acronym | Meaning |
| MVA | Main Valve Actuator |
| OTP | Operations Turnaround Plan |
| VIA | By Means Of (By Way Of) |
| Q | Alpha Pitch Dynamic Pressure |
| ESS | Experiment Subsystem Simulator |
| PLTS | Precision Laser Tracking System |
| MCIU | Master Control And Interface Unit |
| MSU | Measuring Stimuli Units |
| LOS | Loss Of Sync |
| M50 | Mean Of 1950 (Coordinate System) |