The Aero Ae 01 was a Czechoslovakian military trainer biplane built in 1919 and was Aero's first attempt to modify one of the aircraft designs they had been manufacturing under licence during World War I, the Hansa-Brandenburg B.I.[1] It was designed by Antonín Vlasák under the direction of Jan Kouril.[2] The project was originally designated as Ae 10, but later re-designated to Ae 01. The army operated the aircraft under designation A-1.