while in its holding pattern, the flight was instructed to descend through the minimum holding altitude of 6,800 feet. as it descended, its ground proximity warning system gave off several audio warnings, which the crew did not react to for approximately ten seconds. three seconds before impact, the crew increased engine power and attempted to climb, but were unable to clear the terrain. one of the aircraft's wings collided with the summit of mont san-pietro and broke off. the aircraft then went into an uncontrolled dive and violently crashed on the other side of the mountain eight seconds later, killing everyone on board. the time of the accident was 8:53 a.m. local time (07:53 utc).