Not when you can make it up as you go along, as demonstrated.
If you want to count UAVs as aircraft for victory tallying purposes, knock yourself out - the Serbs lied like rugs about NATO losses during the war in Kosovo, so feel free to embarrass yourself. On a similar note, the London bombs were incontrovertibly manufactured locally, and you're only going to make yourself look stupid by trying to prove otherwise.
As for Vitezit, arms stocks are being destroyed throughout Bosnia as part of the streamlining of Bosnia's defence forces - regardless of what part of Bosnia they're in.
Further, Vitezit wound up in Croat territory during the war, and was there after Dayton. But what really puts the icing on this cake is that Jugoimport, the Serbian state owned arms export agency, was buying from Vitezit, along with Zrak (optics, Sarajevo) and UNIS GINEX (small arms ammo/primers, Gorazde), and it was Jugoimort which was doing the actual selling to Iraq.
Perhaps the most telling thing about the whole "Serbian arms to Iraq" episode is that when it came time to seize the Boka Star with its 208 tons of rocket fuel bound for Iraq from Serbia, we had the Croats execute the seizure for us, because we'd learned that we still can't trust the Serbs to do the right thing.
See also Orao, Bosnian Serb aviation firm.
You know only enough to get yourself in trouble, Zagor. Serbians needs to quit trying to point fingers elsewhere, rather than taking care of problems in Serbia.