About Hartzell Hartzell Propeller Inc is the leader in advanced propeller design and manufacturing technology. We design and make propellers that's what we do, that's all we do. Because of our concentration and commitment to propeller driven aviation, we are the supplier of choice for nearly every major aircraft manufacturer. The company traces its history to 1914 when a relationship between Orville Wright and Robert Hartzell led to the manufacture of the first Hartzell propeller in 1917. The company's founding principle of "Built on Honor" has been central to our corporate values from the very beginning. Today, Hartzell propellers are produced using an innovative blend of sophisticated engineering analytics, certification skills and world class manufacturing technologies. We design for performance, reliability and safety. After more than nine decades of experience, we have unmatched engineering experience and offer the broadest range of products.