| Acronym | Meaning |
 | OSSRH | Orbiter Subsystem(s) Requirements Handbook |
| USRA | Universities Space Research Association |
| SF | Safety Factor |
| FCOH | Flight Controllers Operational Handbook |
| TWR | Tower |
| FF | Flip Flop |
| CMP | Configuration Management Plan |
| RAM | Research And Applications Module |
| IPB | Illuminated Push Button |
| PEB | Performance Evaluation Board |
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