| Acronym | Meaning |
| PGA | Programmable Gain Amplifier |
| CR/DIR | Change Request Directive |
| QVT | Qualified Verification Testing |
| SPEC | Specialist Function |
| DBGMP | DBWDecibels Referred To I Watt |
| ESS | Essential |
| KDN | Kinetically Designed Nozzle |
| CSR | Crew Station Review |
| PIA | Preinstallation Acceptance |
| OTH | Over-the-Horizon (.Radar) |