One of a few oddballs in the KLM fleet by Koolhoven, the other Dutch manufacturer. The FK.40 was a domestic airliner designed to carry up to six passengers, but the sole example was given a spacious interior for four. It was sold to a private pilot in 1936 and ended up in the Spanish Civil War. Photo from: ETH-Bibliothek Zürich
This photo was added on 9 August 2019, and has since been viewed 1107 times.