| Acronym | Meaning |
| MRF | Maintenance Replacement Factor |
| CDIL | Cumulative Damage Index Left Engine |
| APPL/A | Ada Process Programming Language Based On Aspen |
| MRAD | Milliradians |
| MVP-L | Multiple Views Project - Language |
| MCBF | Mean Cycles Between Failures |
| CVIB | Compressor Vibration |
| PIDS | Prime Item Development Specification |
| OMG | Object Management Group |
| MTBERA | Mean Time Between Essential Replacement Action |