The Ki-9 was originally planned to be manufactured in two versions using the same basic airframe but with different engines for service as either a primary or intermediate trainer.

[1] The only major change made to subsequent production aircraft was the deletion of the upper-wing ailerons to eliminate oversensitive control inputs.

[2] The Ki-17 was introduced to service as the Army Type 95-3 Basic Grade Trainer Model A under the former aircraft naming nomenclature system.

Tachikawa manufactured 560[3] Ki-17s between 1936 and 1943, and the type saw service with the Army Air Academy and flight training schools.

[2] Japan Manchukuo Thailand Data from Japanese Aircraft of the Pacific War[4]General characteristics Performance