| Acronym | Meaning |
| MAINT | Maintenance |
| TF/TA | Terrain Following/terrain Avoidance |
| EPROM | Erasable Programmable Read Only Memory |
| IM | Information Model |
| R&M | Reliability And Maintainability |
| DWNLD | Download |
| ABU | Analog Backup |
| FBL | Fly-by-light |
| TRU | Transformer Rectifier Unit |
| YFRN | Refrigerated Covered Lighter (non Selfpropelled) |