| Acronym | Meaning |
| SSC | Support Software Change (tdc 95) |
| DFARS | Dod Federal Acquistion Regulation Supplement |
| YTL | Small Harbor Tug (self-propelled) |
| FREQ | Frequency |
| PDSS | Post Deployment Software Support |
| ISE | In-service Engineer |
| FSR | Field Service Representative |
| AIVPL | Anti-ice Valve Position Left Engine |
| OSI | Open Systems Interconnection (iso Standard) |
| NAVAIDS | Navigation (navigational) Aids |