The U.S. Air Force used the T-34A for primary flight training during the 1950s. The original Mentor, a Beechcraft Model 45 derived from the famous Beechcraft Bonanza, was first flown in December 1948. The first military prototype, designated YT-34 by the USAF, made its initial flight in May 1950. #avgeek #history #aviation | National Museum of the U.S. Air Force