[1] This was used by Fuji for the development of the Fuji LM-1 Nikko which was a four-seat liaison aircraft powered by a 225 hp Continental O-470 engine, with introduction of a more powerful 340 hp Lycoming O-480 engine resulting in redesignation as the LM-2, with both the LM-1 and LM-2 being used by the Japan Ground Self-Defense Force.

[1] The KM was a four-seat civil version of the LM-1, fitted with the more powerful Lycoming engine that was later used by the LM-2.

After the KM was used by the Japanese government for civil pilot training, the KM-2 was developed as a side-by-side two-seat trainer, first flying on 16 January 1962.

It combined the structure and engine of the KM-2 with the tandem cockpit of the T-34 Mentor, first flying on 17 January 1978.

[2] Data from Jane's All The World's Aircraft 1966–1967[3]General characteristics Performance