| Acronym | Meaning |
 | HESS | High Energy Squib Simulator |
| RH | Right Hand |
| MFO | Major Function Overlay |
| USB | Unified S-Band |
| HPOT | High-pressure Oxidizer Turbopump |
| MPLN | Maintenance Planning (Data Base) |
| SF | Scale Factor |
| FPS | Forward Power Supply |
| BP | C&TSSCommunication And Tracking Subsystem |
| CDDT | Countdown Demonstration Test |
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