Tour bus flipped over and he was sleeping in his bunk. Got crushed by the bus.

During the European part of the Master of Puppets tour, the band had complained that the sleeping cubicles on their tour bus were unsatisfactory and uncomfortable. As a minor solution the members would draw cards for the most comfortable bunk.[9] On the evening of September 27, 1986 Burton had won the game with an ace of spades. He was sound asleep when the band’s tour bus encountered a patch of black ice, skidded off of the road, and flipped over on the grass in Ljungby Municipality, rural Sweden.[10] Burton fell through the window of the bus and the bus fell on top of him. Attempts were made to lift the bus with a crane, but the chain snapped and the bus fell on him again. It is unknown if Burton was alive before the bus fell on him the second time. [10]