THE Sukhoi Su-27SK and Su-30MK jet fighter aircraft are among the highest quality and most sophisticated of Russian-made military equipment. But the messy process of their purchase has somewhat taken the shine off the technical supremacy of these Russian combat planes. According to Yusman Syafei Djafar, former boss of aircraft manufacturer PT Dirgantara Indonesia, this could end up being a heavy burden for the state budget. "If left idle for