| Acronym | Meaning |
| RAT | Reliability Assessment Testtmtram Air Turbine |
| SSWG | System Safety Working Group |
| FDIG | Fault Diagnostics |
| ILS | Instrument Landing System |
| TAC | Total Accumulated Cyclestmttactical Air Control/command |
| TPCS | Technical Program Control System |
| UUT | Unit Under Test |
| EAU | Extended Arithmetic Unit |
| OS | Operating System |
| GA | Go-around |