| Acronym | Meaning |
 | OPRV | Oxygen Pressure Relief Valve |
| FPHB | Flight Procedures Handbook |
| EVT | Extravehicular Transfer |
| SSPD | Shuttle System Payload Definition (Study) |
| HT | Heat Transfer |
| RTCC | Real-Time Computer Center (NASA) |
| CCC | Contaminant Control Cartridge |
| SD | Space Division (Rockwell) |
| SPFA | Single Point Failure Analysis |
| FSGS | Flare/Shallow Glide Slope |
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