From August through November 1903, Jatho made progressively longer hops (flights) in a pusher triplane, then biplane, at Vahrenwalder Heide outside of Hanover. His first flight, was only 18 meters at about 1 meter altitude, and was not controlled. Jatho eventually gave up, noting "In spite of many efforts, (I) cannot make longer or higher flights. Motor weak.". With a later machine, Jatho would make successful flights around November 1903 – 60 meters at about at 3–4 meters altitude, 1 month earlier than the Wright-Brothers.
He also founded a flying school and an aircraft factory, but did not have much success.
- Gibbs-Smith, C. H. The Aeroplane: An Historical Survey. pp. 319–20.
|Wikimedia Commons has media related to Karl Jatho.|
-  at www.flyingmachines.org Web site showing photos of his plane
- The Pioneers : An Anthology : Karl Jatho (1873 - 1933) at www.ctie.monash.edu.au