Knoller C.II Austro-Hungarian

Knoller C.II aircraft: This was an Austro-Hungarian biplane reconnaissance aircraft used in World War I. It was designed by Richard Knoller and manufactured by Aviatik, Lohner, and WKF. The first model was delivered in September 1916. However, the aircraft had serious design flaws, leading to a fatal crash in 1917 when the wings collapsed in flight.