| Acronym | Meaning |
 | RA | Radar Altimeter (R/A Preferred) |
| OFDS | Oxygen Fluid Distribution System |
| R | LEO Request Liaison Engineering Order |
| GUCP | Ground Umbilical Carrier Plate |
| CRMD | Computer Resources Management Data |
| LED | Light Emitting Diode |
| HVSF | Honeywelf Verification Simulation Facility |
| NSO | NASA Support Operation |
| PS | Power Supply |
| GTCU | Ground Thermal Conditioning Unit |
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