The six passengers traveling on a medical jet before it crashed in Northeast Philadelphia Friday night have been identified by the Mexico-based company that was operating the small plane.All those onboard the Learjet 55 aircraft,

The Learjet, carrying a pediatric patient and five others, crashed on Friday, killing all on board. On the ground, one person was killed and at least 19 others were injured, officials said.

The recording device was a critical piece of the aircraft that investigators were searching for. It will be sent to a lab in Washington, D.C., for evaluation.