AETs inspect, service, maintain, troubleshoot, and repair avionics systems that perform communications, navigation, collision avoidance, target acquisition, and automatic flight-control functions. In addition, they inspect, service, maintain, troubleshoot and repair aircraft batteries, AC and DC power generation, conversion and distribution systems, as well as the electrical control and indication functions of all airframe systems, including hydraulics, flight control, landing gear, fuel, environmental control, power plant, drive train, anti-ice, and fire detection. AETs perform ground handling and servicing of aircraft, and conduct routine aircraft inspections and aviation administrative duties. They will also fill aircrew positions such as navigator, flight mechanic, radio operator, sensor systems operator, and basic aircrewman.