Koolhoven F.K.43
 Koolhoven F.K.43 was a small four-seat single-engined monoplane passenger aircraft manufactured by Koolhoven in the Netherlands. It was a direct successor of the F.K.41.It was a quite successful design with good flying qualities. KLM purchased twelve aircraft and used it as a flying taxi and for pilot training. Two of these were built by Aviolanda.At the outbreak of World War II four F.K.43s were requisitioned by the Royal Netherlands Air Force.