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.

The military version of the Z-37T, armed with bombs and rockets, was almost forgotten. Its development in 1985 was apparently suggested by East Germany, but not proceeded with and the prototype soon became a regular Z-37T cropduster as OK-PJD. It ended up at Kaposvar, Hungary as a spares source. Restored in its original colours, it was unveiled on 24 June 2017 at the Kunovice museum.

OK-PJD was photographed in 2009 engineless and derelict in Hungary.