| Acronym | Meaning |
| TDR | Time Domaine Reflectometer |
| MTE | Maintenance Training Equipment |
| P/N | Part Number |
| CDU | Control Display Unit |
| GPM | General Processing Module |
| VSC | Vast System Change (tdc 85) |
| UART | Universal Asynchronous Receiver/transmitter |
| TDP | Turbine Exhaust Pressure |
| COMPT | Compressor |
| TDP | Technical Development Plan |