| Acronym | Meaning |
 | SVA&C | Shuttle Vehicle Assembly And Checkout |
| FCOS | Flight Computer Operating System (Orbiter) |
| IMU | Inertial Measurement Unit |
| CCA | Coolant Control Assembly |
| TO | Technical Order |
| TC | Thiokol Corporation |
| LTD | Lift-to-Drag |
| SIA | Solar Inertial Attitude |
| R | ETSReconfiguration Electrical Test Stand |
| SOFT | Space Operations And Flight Techniques |
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