Crew was performing a training mission off Crimea coast on behalf of the Black Sea Fleet. During flight, an engine failed, forcing the crew to return to Kacha NAS. On final approach, aircraft hit violently the runway surface, get airborne again, climbed to several meters before stalling and crashing in flames near the runway. While the captain, the copilot and the navigator were killed, the radio operator was seriously injured. Aircraft was destroyed by impact forces and post impact fire.