| Acronym | Meaning |
 | SSIS | Space Station Information System |
| SOMS | Shuttle Orbiter Medical System |
| GHE | Gaseous Helium |
| DAR | Digital Autopilot Requirements |
| AFE | American Flight Echocardiograph |
| CCU | Central Control Unit |
| SC | Scale |
| PRSS | Problem Report Squawk Sheet |
| RF | Radio Frequency |
| MSTR | Master |
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