| Acronym | Meaning |
 | PGR | SPacelab Planning And Ground Rule |
| DAR | Digital Autopilot Requirements |
| SR | Status Review |
| NTIS | National Technical Information Service |
| UCS | UnUtilities Control System |
| MSVP | Master Shuttle Verification Plan |
| S&AD | Science And Applications Directorate |
| EECOM | Systems (MPSR) |
| TD | Time Delay |
| SPEC | Specialist Function |
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