| Acronym | Meaning |
 | S&AD | Science And Applications Directorate |
| LFOP | Landing And Ferry Operations Panel |
| ET | Elevated Temperature |
| PROC | Procurement |
| DRO | Document Release Order |
| RCC | Range Commanders Council (DOD) |
| HEMI | Hemispherical (S-Band Antenna) |
| OASCB | Orbiter Avionics Software Control Board |
| RT | Receiver-Transmitter |
| FSOH | Flight Support Operations Handbook |
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