The Aviatik D.I, also known as Berg D.I or the Berg Fighter' (due to the fact that it was designed by Oberingenieur Julius von Berg), was the first indigenous fighter aircraft of the Austro-Hungarian Air Service (Luftfahrtruppen).
Work on the prototype began in August 1916, while the first flight of the Aviatik D.I prototype, marked 30.14, took place at 16th October 1916 at Aspern, unfortunately killing the test pilot.