| Acronym | Meaning |
| CDPL | Compressor Discharge Pressure Left Engine |
| EXPS | Expanding Squares |
| CVIB | Compressor Vibration |
| RNVC | Reference Number Variation Code |
| NATO | North Atlantic Treaty Organization |
| ASIU | Aircraft System Interface Unit |
| PSDP | Preliminary System Design Plan |
| CONV | Conversion |
| SSD | Software Support Date |
| ESA | Environmental Sensor Assessment |