The Heinkel HD 26 was a reconnaissance seaplane developed in Germany during the 1920s for production in Japan. It was intended as a smaller single-seat counterpart to the HD 25 to provide a spotter aircraft for warships to take off from a short ramp since shipboard catapults had not yet been invented. The HD 26 was a conventional biplane with staggered wings twin pontoon undercarriage and an open cockpit.
Made by Aichi KokukiHeinkel.