| Acronym | Meaning |
| DCP | Depot Condemnation Percent |
| HGDS | Hazardous Gas Detection System |
| MORD | Medical Operations Requirements Document |
| FSRR | Flight System Readiness Review |
| TSGP | Test Sequence Generator Program (ESTEC) |
| REM | Release Escape Mechanism |
| SEC | Secondary |
| ACR | Active Cavity Radiometer |
| LLP | Launch And Landing Project |
| SSR | Staff SuPport Room |