CASA 1.131 Jungmann

The CASA 1.131 was the Spanish licence-built version of the Bücker Bü 131 Jungmann, a two-seat biplane trainer first flown in Germany in 1934. Construcciones Aeronáuticas SA (CASA), the Spanish aircraft maker, was the most ambitious licensee of the design and built roughly 530 aircraft before the line closed in the early 1960s. The Spanish aircraft were fitted with the Hirth HM 504 engine or the Spanish ENMA Tigre G-IVA, which replaced the imported Hirth engines after the first 200 had been built. The Jungmann stayed the primary basic trainer of the Spanish Air Force until 1968, and when Spain disposed of its fleet in the 1960s and early 1970s many aircraft passed to private owners, several of them in the United States. In 1994 leftover CASA jigs were used by Bücker Prado in Spain to build 21 more as the BP 131.