| Acronym | Meaning |
 | S/M | Service/Maintenance |
| UFD | User File Directory |
| BMB | Base Maintenance Building |
| OPFC | Orbiter Preflight Checklist |
| MEA | Material Experiment Assembly |
| IP | Instrumentation/pulse Code Modulation Master Unit Data Bus |
| PSA | Power Servo Am Pl If Ier |
| TSSU | Test Signal Switching Unit |
| CCS | Central Control Station |
| FCA | Functional Configuration Audit |
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