| Acronym | Meaning |
| POSIX | Portable Operating System Interface |
| BCS | Baseline Comparison System |
| SEU | Sighting Electronics Unit |
| VTOL | Vertical Takeoff And Landing |
| GAIL | Glide Angle Indicator Light |
| PAC | Power Assurance Check |
| ODIF | Office Document Interchange Format |
| HIPO | Hierarchical Input Process Output |
| ATIS | Automatic Terminal Information Service |
| DMMH/FH | Direct Maintenance Manhours/flight Hour |