Devastating systems failures in the air puts pilots to the test and shines a light on three astonishing feats of flying. A DC-10 loses all hydraulics when an engine explodes over Iowa, the crew of Qantas Flight 32 is overwhelmed by alarms after an explosion rocks their massive A-380, and a Northwest Airlines 747 is cruising 35,000 feet above the Bering Sea when the unthinkable happens.