| Acronym | Meaning |
 | PSIG | Propulsion Systems Integration Group |
| RECP | Request For Engineering Change Proposal |
| STSOPO | Shuttle Transportation Systems Operations Program |
| VL | Expendable Vehicles (KSC VO Dir.) |
| EVAL | Evaluate |
| PRSDS | Power Reactant Storage And Distribution System |
| MDC | Main Display Console |
| SOP | Secondary Oxygen Pack |
| PRV | Pressure Reduction Valve |
| ET | Edge Thickness |
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