| Acronym | Meaning |
| VAST | Versatile Avionics System Tester |
| R&OA | Reliability And Quality Assurance |
| DUA | Digital Uplink Assembly |
| TG | Ground Systems |
| VT | Vent |
| HC | Hybrid Computer |
| QSA | Qualification Site Approval |
| DNLT | Downlist |
| PIECP | Preliminary Impact Engineering Change Proposal |
| WBDI | Wideband Data Interleaver |