AD – Aviation Machinist Mate
Aviation Machinist's Mates (AD) maintain, inspect, troubleshoot, preserve, and de-preserve aircraft engines and their related systems, including fuel, lubrication, compression, combustion, exhaust, accessory gearbox, aircraft mounted accessory drive, propeller, anti-ice, and bleed air systems. They conduct special and conditional inspections and oil analysis. In addition, they conduct functional checks and required adjustments on engines and related systems. They also supervise and provide training to powerplant work centers.