| Acronym | Meaning |
 | SPA | Signal Processor Assembly |
| DMR | Developmental Instrumentation MDM-Right |
| NH3 | ANH3 Ammonia |
| RECERT | Recertification |
| SSPD | Shuttle System Payload Data |
| MSFP | Manned Space Flight Program |
| MAOT | Maximum Allowable Operating Time |
| ISSL | Initial Spares Support List |
| FPV | Flow Proportioning Valve |
| FSC | Federal Stock Classification |
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