After the success of the Let L.410 twin engine turboprop in the late 70s, Aeroflot requested a possible replacement for its An-24 aircraft. However, the collapse of the Soviet Union left the project vulnerable and attempts to 'Westernise' the plane were unsuccessful. Only eight aircraft were built (6 flying and 2 for structural tests). This unfinished frame was intended for Czech AF but is now on display at the Letecké Muzeum Kunovice.

This plane was always thought to be OK-WZA c/n 910101. However, in August 2020 the dataplate was able to be checked and the airframe is now confirmed as c/n 920103. It was first noted in February 1994, still on the Let assembly line, and last seen there in July 1997. The plane never flew and was first noted at the museum in September 2013.

In 1993 the LET company demonstrator was taken on a promotional tour in the colors of the Czech air force. Now it is preserved in the Kunovice museum.

A lucky find for me - preserved in Stare Mesto, near Uherske Hradiste, is the first prototype of the unsuccessful L-610 airliner. It first flew on 28 December 1988.