| Acronym | Meaning |
| STO | Short Takeoff |
| CDIF | Case Date Interchange Format (eia Effort) |
| TADIXS | Tactical Data Info Exchange Subsystem |
| ENAV | Electronic Navigation |
| MDU | Multiplexer And Distribution Unit |
| I/ETM | Interactive/electronic Technical Manuals |
| SEP | System Engineering Process |
| O&SHA | Operating And Support Hazard Analysis |
| ISSI | International Software Systems Incorporated |
| DIM | Discrete Interface Module |