Readers join desperate pilots in the cockpit as they fight gravity and time in a plane that's falling out of the sky. Anyone who watches the news knows about the black box. Officially called the cockpit voice recorder, the black box (which is actually Day-glo orange) records the final moments of any in-flight accident. Often it provides the only explanation of a crash -- inevitably, it provides a heart-breaking, second-by-second account of intense...