It is a largely metal pod and boom aircraft , with cantilever shoulder wings .
The FK - 3 was designed by Otto Funk to be a high performance sailplane , particularly suited to weak thermal conditions but also easy to fly .
FK - 3 is a largely metal pod and FK - 3   , with cantilever shoulder wings .
The FK - 3 was designed by Otto Funk to be a high performance sailplane , particularly suited to weak thermal conditions but also easy to fly .