After solving all the problems, on April 20-21, 1943, a non-stop flight was made from the factory airfield near Tokyo to Singapore, the plane covered the distance of 5330 km in 19 hours 13 minutes.
The second prototype was flown around a month later. He was being prepared for a flight to Germany. The plane started on July 7, 1943, but disappeared somewhere over the Indian Ocean, presumably being shot down by British fighters. The lack of weapons turned out to be fatal and the military had to abandon it, while the third prototype remained unfinished.
On the first prototype aircraft, the Japanese decided to carry out an unofficial attempt to break the world record for flight range along a closed route. The Sinking-Peichenggu-Harbin triangle over the cities of Manchuria with a length of 865 km was chosen. The launch took place on July 2, 1944 from the Sinking airfield, the aircraft, in 57 hours 12 minutes, having made 19 flights along a closed route, covered a distance of 16 435 km *, which allowed the Japanese to establish a new, albeit unofficial, world achievement in flight range.
Having survived the war, the plane was sent to the United States, where, after passing a series of tests, it was eventually disassembled.
* note - the remaining fuel allowed the aircraft to fly 1600 km, confirming the declared practical range of 18,000 km.
- "Encyclopedia of military engineering " /Aerospace Publising/
- " Aviation of Japan. "/ Andrey Firsov /