This aircraft was used between 1984 and 1985 to test the suitability of the Z-37T for military work. The aircraft was demilitarized and placed on the Czechoslovak civil register as OK-PJD in March of 1986. It was struck from the Czechoslovak register in 2005 and sold to a Hungarian owner. It sat derelict in outdoor storage in Hungary from 2005 to 2016. I took this picture of the aircraft about a month after a crew from Letecké Muzeum Kunovice brought it back from Hungary to restore it.