| Acronym | Meaning |
 | MDCA | Main Distribution Control Assembly |
| USBS | Unified S-Band System (Subsystem) |
| SOC | Simulation Operation ComPuter |
| APID | Applications Process Identification |
| SIPS | Small Instrument Pointing System |
| SF | Star Field |
| SFT | Shaft |
| EOS | Emergency Oxygen System |
| SFPPL | Short Form Provisioning Parts List |
| OD | Operations Directive |
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