| Acronym | Meaning |
 | OM | Outer Marker (ILS) |
| EBO | Eyeballs Out (-GX) |
| FQR | Flight Qualification Review |
| LOWG | Landing Operations Working Group |
| FEAT | Final Engineering Acceptance Test |
| UVD | Under Voltage Device |
| NH4 | HNH4 Hydrazine |
| RAX | Remote Access Terminal |
| I | D&CA Inverter Distribution And Control Assembly |
| PSCL | Propellant Systems Cleaning Laboratory |
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