It is a replica of the historic aircraft LETOV Š 239, which was built according to the original documentation from the NTM in Prague, Mr. Peter Brzák under the professional supervision of Mr. Petr Mara. The aircraft was exhibited for several years in the premises of a private museum at Točná Airport in CZ, from where it was purchased by the current owner for the purpose of demonstration at aviation events, in which the piloted alternative Ing. Vladimír Lorenc or Vladimír Duba.

The Letov Š-39 was a sport aircraft produced in Czechoslovakia during the 1930s. It was a conventional, parasol-wing monoplane with fixed tailskid undercarriage, and seating for the pilot and passenger in tandem, open cockpits. Because the cabane struts were very short, and the wing therefore placed very close to the top of the fuselage, the cockpits had the unusual arrangement of the passenger’s being in front of the wing while the pilot’s was behind it. The outer half of each wing was fitted with fixed slats along the leading edge. An initial batch of 23 machines was built for use by Czech aeroclubs. These were followed by batches of aircraft with alternative powerplants.