ROME, The russian-made Tupolev 154 crashed several times in the last years. One of these planes crashed and exploded in flames in Siberian woodlands near the village of Burdakovka last July. More than 10 air crashes involved Tu-154 planes in the '90 plus two air collisions. The aircraft is currently used by russian, chinese airlines, and countries formerly belonging to ex Soviet Union. Tu-154 planes...