| Acronym | Meaning |
| SCDR | Seller Critical Design Review |
| VAC | Vehicle Assembly And Checkout |
| RDR | Rudder |
| GACU | Ground Avionics Cooling Unit |
| MEIU | Main Engine Interface Unit |
| MR | Mission Report |
| TSS | TPS Summary Sheet Control |
| LL | Lower Limit |
| GC | Ground Control |
| MTBM | Mean Time Between Maintenance |