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,

A medical transport jet with a child patient, her mother and four others aboard crashed into a Philadelphia neighborhood shortly after takeoff Friday evening, exploding in a fireball that engulfed several homes.

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.