| Acronym | Meaning |
| N204 | Nitrogen Tetroxide |
| ADEOS | Advanced Earth Observing Mission |
| PMS | Performance Management System |
| LR | Lower Right |
| SIM | Scientific Instrumentation Module |
| NW | NASA Waiver |
| RIV | Recirculation Isolation Valve |
| VATA | Vibro-Acoustic Test Article |
| FCC | Flight Control Computer |
| MO | Middeck Overhead |