These walk-around photos were taken at Västerås Flygmuseum in 2017. They show a Bücker Bü 181B Bestmann in Swedish Air Force colours as Sk 25, coded 314, serial 25114. The Bestmann was designed by Swede Anders Johan Andersson — who later also designed the Saab 91 Safir — at Bücker Flugzeugbau in Berlin, and first flew in February 1939. It became the Luftwaffe's standard elementary trainer, distinguished by its side-by-side seating arrangement which allowed the instructor to demonstrate control inputs directly to the student — a significant pedagogical advance over the tandem trainers it replaced. The type was licence-built in several countries, including Sweden, the Netherlands and Czechoslovakia. In 1942 the Swedish Air Force acquired one example for evaluation, and rather than give the production licence to Saab — with whom Carl Bücker had a previous grievance — it was awarded instead to Hägglund & Söner in Örnsköldsvik. Between 1943 and 1946 the company built 120 examples, designated Sk 25, which were delivered to the flying school at F 5 Ljungbyhed and used as the standard elementary trainer until replaced by the Saab Safir in the early 1950s. After its Air Force career ended most Sk 25s were sold to German civilian operators, and 25114 briefly carried the German registration D-EBIH before returning to Sweden. It is now on static display at Västerås Flygmuseum.