| Acronym | Meaning |
| PSI | Power Static Inverter |
| FRJD | Forward Reaction Jet Driver |
| RP | Relative Pressure |
| SP-PCO | Program Control Office (KSC Shuttle) |
| NAV | Navigate |
| EIR | Environmental Impact Report |
| VOR-DME | VHF Omni Range-UHF Distance Measuring Equipment |
| VPF | Vertical Processing Facility |
| SIMS | Shuttle Inventory Management System |
| S | PRES Star Present |