The wings had wooden structures and were ply-covered around the leading edges and on the undersides.

Instructor and pupil had separate open cockpits in tandem, equipped with dual controls.

[1] Only two R-3 are known to have flown[2] but one made an extended tour of Europe in the late summer of 1932, piloted by two Japanese university students supported by the Japan Aeronautical League of Students.

Flying from Japan to Western Europe via Siberia, they covered 14,000 km (8,700 mi; 7,600 nmi) and visited at least four capitals as well as other cities.

[1] Data from Aero Digest, December 1932[1]General characteristics Performance