| Acronym | Meaning |
 | JOIP | Joint Operations Interface Procedure |
| SPADS | Shuttle Problem Analysis Data System |
| RTHS | Real-Time Hybrid System |
| ST | Self Test |
| FOB | Flight Operations Building |
| ICF | Interface Control Function |
| LRSI | Low-temperature Reusable Surface Insulation |
| GHA | General Housekeeping Area |
| IU | Interface Unit |
| OESS | Orbiter/ET Separation Subsystem |
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