OK-IUS 10 Letov ST-4 Aztek Private Nymburk (LKNY), Czech Republic Derek Heley - 09/09/2012
OK-DUU 18 Letov ST-4 Aztek Private Chrudim (LKCR), Czech Republic Erik Frikke - 09/09/2012
OK-AUU 07 Letov ST-4 Aztek Private Cranfield (EGTC), UK - England Dave Mangham - 30/06/1995