The CASA I.131E Jungmann two-seat biplane is a trainer evolved from the license built Bücker
Bü.131A Jungmann. Bücker Flugzeugbau was founded by Carl Bücker in 1932. Their first design was
the Bü.131A Jungmann powered by a 4 cylinder Hirth in line engine. The prototype "D-3150"
flew first 27 April 1934. The Jungmann was ordered by the Deutsche Luftsport Verband and used as a
trainer for the Luftwaffe. The Bü.131 was built under license in Japan, Switzerland, Czechoslovakia and Spain.
In Spain production started 1938 and the CASA I-131 remained in production with the Construcciones
Aeronàuticas Sociedad Anonima (C.A.S.A.) till the end of the fifties. The ICAO Aircraft Type Designator
for the CASA I.131E Jungmann is BU31.
The CASA I.131E Jungmann s/n 2092 was original built in 1954 for the
Ejército del Aire Español - Spanish Air Force - and registered E.3B-487.
The aircraft was fitted by CASA with an ENMA Tigre G-IV-Ax engine. In
service with the Spanish Air Force the Jungmann was used as a training
aircraft. After being withdrawn from use in the Spanish Air Force it was
registered civilian as EC-333. In 1996, the airframe was exported to the
Netherlands in non flying condition and rebuilt at Hoogeveen airfield.
The aircraft was fitted by with an ENMA Tigre G-IV-B engine and registered G-BUVN.
CASA 1-131E Series 2000 G-BUVN it flew first after its restauration on 3 August 1996.
On 13 May 2006, CASA I.131E Jungmann G-BUVN was seen at Hoogeveen airfield (EHHO)
painted in the old Dutch Air Force BI 005 colors.