A plummeting plane that sliced an apartment complex in two. A smoke-filled cockpit that forced pilots into a blind landing. A reopened investigation of the controversial crash that killed a UN secretary. This season, we examine some of the worst Air Disasters to date. Some ended in triumph, some in tragedy, and all led to changes in the aviation industry to make air travel safer. Official reports and interviews with the pilots, ATC, and lucky survivors bring these stories to life.