| Acronym | Meaning |
 | RAI | Radar Altimeter Indicator |
| CWA | Controlled Work Area |
| OT | Operating Time |
| FDM | Flight Data Manager |
| MSBLS | Microwave Scanning Beam Land Station |
| ESS | Environmental Support System |
| LPOT | Low-pressure Oxidizer Turbopump |
| RCVS | Remote Control Video Switch |
| NIM | NNIM Nuclear Instrumentation Module |
| VP | Vacuum Pump |
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