| Acronym | Meaning |
 | OPFC | Orbiter Preflight Checklist |
| COMM | Communications |
| RTOP | Research And Technology Objectives And Plans |
| SLS | Statement Level Simulator |
| FDDB | Function Designator Data Base |
| DL | Downlink |
| CRR | Computer Run Report |
| STR | LStructural |
| I | ECM Induced Environment Contamination Monitor |
| CCW | Counterclockwise |
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