TheSun released his Czech Air Force addon in the BI Forums.

Quote TheSun:
Hello folks, I bring you the CzAF addon which for now contains just three reskins for original ArmA2 helicopters. I plan to add some more units later on when the time permits. First on to-do list is L-159. Helicopters can be found under BLUFOR->ACR->AIR or EMPTY->AIR. You can also use the textures on other models, just follow the directions on the download page.