| Acronym | Meaning |
 | GAC | Ground Attitude Control |
| PCM | E Pulse-Code Modulation Event |
| SDB | Shallow Draft Barge |
| HDR | High Data Rate |
| SOMS | Shuttle Orbiter Medical System |
| PRTLS | Powered Return To Launch Site |
| BSR | Basic System Release |
| QD | Quick Disconnect |
| ERSI | Elastomeric Reusable Surface Insulation |
| FTRD | Functional Test Requirements Document |
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