| Acronym | Meaning |
 | PIA | Project Impact Analysis |
 | T | Test |
 | SPC | Stored Program Command |
 | STS | Space Transportation System |
 | MSCR | Measurement/Stimuli Change Request |
 | D&CS | Display And Controls Subsystem |
 | SDM | Subsystem Design Manuals |
 | MI | Management Information |
 | DWS | Disaster Warning Satellite |
 | SEC | Source Evaluation Committee |