| Acronym | Meaning |
 | FOD | Flight Operations Directorate (JSC) |
| TT&C | Tracking Telemetry And Control |
| HB | High Bay |
| EL | Electromagnetic Interference |
| OBS | Operational Bioinstrumentation System |
| PCP | Power Control Panel |
| RTD | Real-Time Display |
| TC | Thrust Chamber |
| ICMS | Indirect Cost Management SYstem |
| IPS | Interrange Instrumentation Group |
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