Austro-Hungarian Aviatik D.I fighters. Aircraft in the 184, 284 and 384 serial batches were built by WKF, the Wiener Karosserie- und Flugzeugfabrik. Other series were produced by Aviatik and four other manufacturers. Photo from: Fortepan

Designed by Julius Berg and produced by the Austrian branch of the German Aviatik company, the D.I fighter was one of the better Austrian aircraft of WWI, although pilots preferred the Albatros D.III. Some 700 examples were built in 1917 and 1918. The Austro-Daimler engine was prone to overheating. Note the large radiator filler cap - it almost looks like a crafted mascot!

The D.1 was the first Austrian designed fighter to be built and this rare original was produced by Thöne & Viala in Vienna. It is now on display at the Personal Courage wing at the wonderful Museum of Flight.

1918-built original Aviatik D.1 aircraft. Later moved to the Museum of Flight at Seattle.