Overview: 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. Devastating systems failures in the air put pilots to the test, and shine a light on three astonishing feats of flying.