| Acronym | Meaning |
| SIMAS | Sonar In-situ Mode Assessment |
| FADEC | Full Authority Digital Engine Control |
| MTTF | Mean Time To Failure |
| BB | Broadband |
| PIDS | Prime Item Development Specification |
| NU | Nose Up |
| FIPS | Federal Information Processing Standards |
| EL | Elevation |
| STEP | Spec To Executable Program; |
| RBL | Right Butt Line |