| Acronym | Meaning |
 | TSB | Twin Sideband |
| TDRS | Telemetry Downlist Receiving Site |
| BFCS | Backup Flight Control System |
| PFL | Primary Freon Loop |
| DCS | Display And Control System |
| BOS | Bright Object Sensor |
| TW | Thumbwheel |
| SOC | Simulation Operations Center |
| CAN | Certification Analysis Network |
| PCTR | Pad Connection Terminal Room |
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