| Acronym | Meaning |
 | TWTA | Traveling Wave Tube Amplifier |
| CDRL | Contract Data Requirements List |
| FPE | Functional Program Element |
| HX | Heat Exchanger |
| SESC | Shuttle Events Sequential Control |
| MCA | Master ControlAssembly |
| MAAR | Monthly Associate Administrator's Review |
| DY | Deputy Director (KSC Directorate) |
| CL | Centerline |
| TVAR | Test Variance |
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