During World War I, the Spanish Air Arm was unable to obtain combat aircraft from abroad to modernise its operational units. Hispano enlisted the services of French designed Emile Dewoitine who designed a fighter monoplane, the HS-50, which was to be powered by the Hispano-Suiza HS-12-Z-89 engine.
The design reached full-scale mock-up stage when the decision was made to build the Messerschmitt Bf109G-2 under licence.
All Aero 