| Acronym | Meaning |
 | FCP | Failure Correction Panel |
| FDS | Flight Dynamics Software/System |
| FACS | Facilities Control |
| CICU | Communication Interface Control Unit |
| EVCU | Extravehicular Communications Umbilical |
| SC | Service Charge |
| SSCC | Support Services Control Center |
| REF | Reference |
| PGS | Power Generation Subsystem |
| R | Ratio |
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