| Acronym | Meaning |
 | MRS | Management Review System |
| SPG | Signal Point Ground |
| MSFN | Manned Space Flight Network |
| STDN | Space Tracking And Data Network |
| IMU | Internal Measurement Unit |
| CWS | Caution And Warning Status |
| SGMT | Simulated Greenwich Mean Time |
| SOMS | Shuttle Orbiter Medical System |
| LC | Intercomputer |
| JETS | Joint Electronics Type (Designation) System |
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