| Acronym | Meaning |
| MDU | Multiplexer Decoder Unit |
| FLR | Field Level Repairable |
| TDC | Technical Directive Code |
| IECMS | In Flight Engine Condition Monitoring System |
| IACS | Integrated Acoustic Communication System |
| MMF | Mobile Maintenance Facilities |
| LSE | Langing Signal Enlisted |
| JUSTIS | Joint Uniform Services Technical Information System |
| QDMM | Quantitative Debris Monitor Maintenance Alert Status |
| SWDP | Software Development Plan |