| Acronym | Meaning |
 | OISSP | Office Of Interim Space Station Program |
| OPBOV | Oxidizer Preburner Oxidizer Valve |
| CC | Channel Controller |
| PIRN | Preliminary Interface Revision Notice |
| RDC | Request For Document Change |
| LC | Intercom (Orbiter To Ground Via Hardline) |
| ISR | Initial System Release |
| PLSP | Payload Signal Processor |
| HF | High Frequency |
| STC | Standard Test Configuration |
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