| Acronym | Meaning |
 | UNDV | Undervoltage |
| DRUC | Disposition Record Unsatisfactory Condition |
| DPP | Data Processing System (Subsystern) |
| EVCS | Extravehicular Communications System |
| NRS | Nonconformance Reporting System |
| R | IMPMinimum Range To Avoid Plum Impingement |
| ETA | Estimated Time Of Arrival |
| SSI | Significant Structural Item |
| RAM | Responsibility Assignment Matrix |
| SIA | Solar Inertial Attitude |
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