The missile rose from a field near the village named Red October (Chervonyi Zhovten) in eastern Ukraine. In less than a minute it found its target at 33,000 feet. The warhead was a fragmentation bomb, triggered by a proximity fuse. It exploded as the missile was to the left and a little above the Boeing 777. A supersonic wave of shrapnel tore through the cockpit, eviscerating the pilots. The entire forward part of the fuselage was ripped away.
at The Daily Beast.
Source: The Daily Beast