| Acronym | Meaning |
| CAR | Corrective Action Request |
| CIF | Central Instrumentation Facility |
| OMBUU | Orbiter Midbody Umbilical Unit |
| HRD | High-rate Dosimeter |
| SDC | Shallow Draft Board |
| OPL | Operational |
| OCF | Orbiter Computational Facilities |
| FTR | Flight Test Requirement |
| RAPCON | Radar Approach And Control |
| FCAP | Flight Control Applications Program |