| Acronym | Meaning |
| BEL CRK | Bell Crank |
| HERF | Hazards Of Electromagnetic Radiation To Fuels |
| IND | Indicator |
| T3 | Compressor Discharge Air Temperature |
| DDR&E | Design Development Research & Engineering |
| RV | Relief Valve |
| AIC | Allowance Item Code |
| SIMSYS | Simulation System (software) |
| GAIL | Glide Angle Indicator Light |
| YM | Dredge (self-propelled)(misc) |