This L-39 is on display in the grounds of Letecké opravovne Trenčín, a.s. (LOTN), a MRO company that serves a number of Air Forces worldwide by offering overhauled facilities for fixed- and rotary-wing aircraft including Mi-8/17/171, L-39; and L-410. This L-39 is actually a composite built from a few different frames and the fake serial refers to the year in which LOTN was founded.