| Acronym | Meaning |
 | PDR | Preliminary Data Requirements |
| UV | Under Voltage (U/V Preferred) |
| SSCA | Surface Sampler Control Assembly |
| MTBM | Mean Time Between Maintenance |
| IVA | Intravehicular Activity |
| SCM | Subsystem Configuration Monitoring |
| SM | Short Module |
| COOP | Cooperative |
| HL | Hydrogen Line |
| MDAS | Mission Data Acquisition System |
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