Ruben Tatevosovich Yesayan tested what Russian four-engined long-haul wide-body airliner designed by Ilyushin?
Ruben Yesayan:  Yesayan tested several aircraft, including Tupolev Tu-334, Tupolev Tu-154, Ilyushin Il-76MF, Ilyushin Il-96 and Ilyushin Il-114, and received the title of the Hero of the Russian Federation.
i don't know