The Hansa-Brandenburg B. I was an unarmed military trainer and reconnaissance biplane of World War I flown by the Austro-Hungarian Air Service. Early models were known internally to the Hansa-Brandenburg firm as the type D while later models with a more powerful engine were designated FD. This aircraft was one of the earliest designs of Ernst Heinkel who was working for Hansa-Brandenburg at the time. It was an entirely conventional two-bay biplane with staggered wings of unequal span.
Made by Hansa-Brandenburg.