| Acronym | Meaning |
| GPS | Global Positioning System |
| ISC | Intercommunication Set Control |
| NAVSTAR | Global Positioning System (gps) |
| LLCSC | Loser-level Computer Software Component |
| AMAC | Aircraft Monitor Control |
| SOSTRL | Sostr Left |
| PMDB | Project Master Data Base (trw Ir&d Project Name) |
| TPS | Training Path System |
| MEF | Mad Environmental Filters |
| NAESU | Naval Aviation Engineering Service Unit |