It's one of the most important pieces of forensic evidence following a plane crash: The so-called “black box." There are actually two of these remarkably sturdy devices: the cockpit voice ...

Investigators found a new lead amid their probe into the cause of the deadliest plane crash in nearly 25 years in Washington DC.

It's one of the most important pieces of forensic evidence following a plane crash: The so-called “black box."There are actually two of these remarkably sturdy devices: the cockpit voice ...

It's one of the most important pieces of forensic evidence following a plane crash: The so-called “black box." There are actually two of these remarkably sturdy devices: the cockpit voice ...