| Acronym | Meaning |
| PGA | Pressure Garment Assembly |
| RSO | Radiological Safety Office |
| R | ETSReconfigurable Electrical Test Stand |
| REDUN | Redundancy |
| MICIS | Material Information Control And Information System |
| FDDB | Function Designator Data Base |
| COS | Console Operating System |
| N/C | Not Critical |
| CCM | Crew/Cargo Module |
| FHS | Forward Heat Shield |