| Acronym | Meaning |
 | U | Underfloor |
| SATO | Supply And Transportation Operations |
| SSP | Standard Switch Panel |
| SOMS | Shuttle Orbiter Medical System |
| PRC | People'sRepublic Of China Satellite |
| RCC | Reinforced Carbon-carbon |
| SSB | Single Sideband |
| DAR | Digital Autopilot Requirements |
| OEX | Orbiter Experiments |
| FQT | Formal Qualification Test |
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