Friedrichshafen FF.54 in its original configuration

Friedrichshafen FF.54 Quadraplane Fighter

Friedrichshafen FF.54 Quadraplane Fighter

The Friedrichshafen FF.54 was an experimental quadraplane fighter that crashed on its first flight on 31 October 1917. Rebuilt as a triplane it crashed again in May 1918 and further development was discontinued.