| Acronym | Meaning |
 | MET | Mission Elapsed Time |
| MMU | Mass Memory Unit |
| PCVL | Pilot Controlled Visual Landing |
| SACS | SADshuttle AuthorizedDocument |
| ID | Identification |
| RIL | Reparableltemlist |
| SSR | System Requirements Review |
| DFCS | Digital Flight Control Software (System) |
| POP | Preflight Operations Procedures |
| GOX | GaGOXGaseous Oxygen (GO |
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