| Acronym | Meaning |
 | OMR | Orbiter Management Review |
| HVDS | Hypergolic Vapor Detection System |
| E-P | Electron/Proton |
| LOS | Input/Output Supervision |
| LPDM | List Of Physical Dimensions |
| SD | Space Division (Rockwell) |
| OPI | Orbiter Payload Interrogator |
| MFV | Main Fuel Valve |
| SPG | Single Point Ground |
| RANC | Radar Absorption Noise And Clutter |
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