The Let LF-109 Pionýr is a glider aircraft developed by Czechoslovak manufacturer Let Kunovice. It was designed as a two-seater training aircraft and the first flight was performed in March 1950. The plane features a simple and robust design of a fabric-covered steel tube fuselage and has good flight characteristics. In total, about 470 aircraft were built.
Specifications.
General characteristics* Crew: one* Capacity: one passenger* Length: ()* Wingspan: ()* Wing area: ()* Aspect ratio: 8.98* Airfoil: 9% maximum thickness* Empty weight: ()* Gross weight: ()
Performance 
References.
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