Investigators have already recovered the cockpit voice recorder and flight data recorder of the American Airlines plane that collided with an Army helicopter as the plane was landing Wednesday night at Ronald Reagan National Airport next to Washington,

The black box recorder from the medical plane that crashed in Northeast Philadelphia, killing seven people and injuring two dozen, did not record audio from Jan. 31 and was likely

In its investigation of a deadly Philidelphia crash, the NTSB has said that the CVR failed to record the flight and had likely not been logging audio for years.