Overview
The Raab-Katzenstein RK.9 Grasmücke (Hedge-sparrow) was a 1920s German two-seat touring, advertising and training biplane. It was one of many designs from several countries aiming to provide low cost flying and was quite successful, with about twenty built.
Specifications
Powerplant
| Engine model | Anzani 3-cylinder fan engines |
|---|
Figures are compiled from public sources and may be approximate; they can vary by variant and configuration.
Photos
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