| Acronym | Meaning |
 | ETA | Estimated Time Of Arrival |
| PTT | Push To Talk |
| NASA | National Aeronautics And Space Administration |
| POIL | Engine Delta Oil Pressure |
| SCCB | Software Configuration Control Board |
| CUDIX | Common User Data Information Exchange |
| ACC | American Communications Corp |
| DWN | Down |
| PSD | Power Demand Signal |
| P2 | Compressor Inlet Pressure |
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