Previously, Hungary, the Czech Republic and Austria have chosen the C-390 region, and in addition, Portugal, the Netherlands, the Republic of Korea and Sweden are besides exporting customers for this machine. The purchases of each of these customers are so far average and sing in each case respective machines. A larger number – 19 machines – was purchased only by the maker country. Against this background, the possible Slovak order for 3 aircraft (with option for the fourth) seems so significant.