All six people aboard the plane − a pilot and copilot, two medical personnel, a patient and her mother − died in the crash Friday.

The Black Hawk helicopter's black box has been recovered and is in "good condition," the NTSB said today. Newsweek's live blog is closed.

Investigators found the black box from the air ambulance jet that crashed shortly after takeoff in Philadelphia on Friday. The critical piece of evidence could help them piece together what happened in the final moments of the flight.