The L-39 Albatros is a two seat, single engine aircraft designed and manufactured by Aero Vodochody for the Czechoslovakian Air Force. It was the first airplane to be powered by turbofan engines and was later upgraded to the L-59 Super Albatros. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.