| Acronym | Meaning |
 | RDCS | Reconfiguration Data Collection SYstem |
| LETF | Launch Equipment Test Facility (KSC) |
| PSI | Pounds Per Square Inch (Static Pressure) |
| SHRD | Supplemental Heat Rejection Devices |
| ETD | Electrical Terminal Distributor |
| ESF | Explosive Safe Facility |
| HSD | High Speed Data |
| OAA | Orbiter Access Arm |
| MSG | Mechanical Subsystem Group |
| R | Rankine |
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