Raab-Katzenstein RK-26 Tigerschwalbe, also known as the Fieseler F 1 Tigerschwalbe, was a German twin-seat biplane trainer aircraft designed by Gerhard Fieseler by the end of the 1920s.
Gerhard Schröder | Gerhard Richter | Gerhard Müller (rower) | Gerhard Müller | Gerhard von Scharnhorst | Gerhard Munthe | Gerhard Zucker | Gerhard | Gerhard Markson | Gerhard Gentzen | Roberto Gerhard | Herman Gerhard Gade | Gerhard von Rad | Gerhard V of Jülich | Gerhard Riedmann | Gerhard Präsent | Gerhard Munthe (painter) | Gerhard Maria Wagner | Gerhard Ludwig Müller | Gerhard Heinrich Dieke | Gerhard Hanappi | Gerhard Frey | Gerhard Christoph von Krogh | Fieseler Fi 167 | Ken Gerhard | Heinz-Gerhard Haupt | Gerhard von Kügelgen | Gerhard von Graevenitz | Gerhard VI of Jülich, Count of Berg and Ravensberg | Gerhard VI |