The excellent characteristics of the Tachikawa Ki-36 made it potentially ideal as a trainer.

This led to the development of the Ki-55 with a single machine gun.

After successful testing of a prototype in September 1939, the type was put into production as the Tachikawa Army Type 99 Advanced Trainer.

In all, 1,389 Ki-55 were constructed before production ended in December 1943 - with Tachikawa having built 1078 and Kawasaki 311.

Francillon also mentions delivery to the Japanese satellite air force of Cochinchina, the southernmost third part of present Vietnam[2] Data from Japanese Aircraft of the Pacific War[3]General characteristics Performance Armament