| Acronym | Meaning |
| DAR | Deviation Approval Request |
| MMES | MSFC Mated Element Systems |
| TDRS | Tracking And Data Relay Satellite |
| M/U | Mockup |
| HIPO | Hierarchical Input/Process Output |
| SAMTO | Space And Missi E Test Organization (VAFE3) |
| SEC | Source Evaluation Committee |
| VCN | Verification Completion Notice |
| RL | Return Link |
| EPDS | Electrical Power Distribution Subsystem |