FSX/P3D – Kawasaki Hien. The Ki-61 Hien was named “Tony”, by the United States War Department .It was the only mass-produced Japanese fighter of the war to use a liquid-cooled inline V engine. Over 3,000 Ki-61s were produced. Initial prototypes saw action over Yokohama during the Doolittle Raid on 18 April 1942, and continued to fly combat missions throughout the war.
