This RK 9 "Grasmücke" (Prod. Number: 353) was built in 1928 and used for advertising flights. In 1929, it was damaged in a landing accident and afterwards stored in a shed. The plane was rediscovered in 1968 and after a few repairs handed over to the Otto-Lilienthal-Museum in Anklam. It is now on display at the Deutsches Technikmuseum Berlin as a loan object. This RK 9 is the last surviving plane of its type.
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<span class="int-own-work" lang="en">Own work</span>