The “black box” of the medical jet that crashed in Philadelphia on Friday was found on Sunday. It was retrieved in the crater caused by the plane’s impact when it crashed into one of the city’s streets. 

The “black box” is the plane cockpit’s voice recorder, which provides information about the flight, including the last words and, if any, communication from the plane’s pilots to air traffic control. The recordings will provide insight into what happened in the last minutes of the crash, possibly revealing answers to what caused the tragic accident.