Description: Hartzell Propeller, founded in 1917 and headquartered in Piqua, Ohio, is the global leader in advanced aircraft propeller design and manufacturing for general aviation. The company supports both piston-engine and turboprop aircraft and provides custom propulsion solutions for electric, hybrid-electric, and advanced air mobility programs. We design, develop, test, manufacture, and support constant-speed aluminum and composite propeller systems for all categories of aircraft, ranging