| Acronym | Meaning |
 | OF | Outside Face |
| PGNCS | Primary G&N And Control System (Subsystem) |
| TTA | Time To Apogee |
| CDU | Computer Display Unit |
| COSI | Closeout System Installation |
| RTIF | Real-Time Interface |
| ETA | Estimated Time Of Arrival |
| SEADS | Shuttle Entry Air Data System |
| CMP | Configuration Management Plan |
| DAE | Data Acquisition EquiPment |
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