Type 89 refers to two unrelated Imperial Japanese Army aircraft machine guns.

The first machine gun is a recoil-operated, licensed copy of the Vickers Class E machine gun re-chambered to 7.7x58mmSR Type 89 cartridge,[2] it is referred to as the "fixed type".

[citation needed] It was derived from otsu-gou - an experimental machine gun (1922–1929) which was a Type 11 turned on its side and fed from a pan magazine.

[2] The machine gun was chambered in the 7.7x58mmSR Type 89 cartridge, it used a Y-shaped metallic stock, spade grips, the barrels had no cooling fins (contrary to Type 11), it was fed from two quadrant-shaped 45-round pan magazines (each magazine has a place for nine 5-round stripper clips).

[citation needed] Single or doubled Type 89s were used in most Imperial Japanese Army aircraft that had flexible defensive weapons, including the Mitsubishi Ki-21, Ki-67 and Nakajima Ki-49 heavy bombers, the Mitsubishi Ki-30, Ki-51 and Kawasaki Ki-32 light bombers, the Tachikawa Ki-9 (for training purposes only), and various other aircraft in the Army Air Force inventory.