| Acronym | Meaning |
 | VOR | VHF Omnidirectional Radio Range |
| FCL | Freon Coolant Loop |
| TG | Ground Systems (KSC Directorate) |
| SPP | Simulation Planning Panel |
| OD | Operational Downlink/Downlist |
| HPF | Horizontal Processing Facility (O&C) |
| UV | Microvolt |
| EDS | Emergency Detection System |
| PIRN | Preliminary Interface Revision Notice |
| DDM | Data Display Monitoring |
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