| Acronym | Meaning |
| TSA | Test Start Approval |
| AC | Comptroller Office |
| EFCS | Earth Fixed Coordinate System |
| ATLAS | Atmospheric Laboratory For Applications And Science |
| TRA | Turnaround Requirements Analysis |
| SST | Single System Trainer |
| K-IUSPS | KSC IUS Project Specification |
| REM | Roentgen Equivalent In Man |
| HMF | Horizontal Mating Facility |
| JURG | Joint Users Requirements Group |