Five weeks after a medical plane crashed in Philadelphia, leaving seven people dead​, the cause is still under investigation.

The National Transportation Safety Board says a cockpit voice recorder was not working on a medical transport plane that ...

Authorities have released their preliminary report about the Philadelphia plane crash that killed seven people in January.

A critical part of the NTSB investigation into the events leading up to the midair collision between an Army helicopter and ...

Investigators have not yet determined what caused the Learjet 55 to nosedive seconds after takeoff on Jan. 31. The crash ...

The preliminary report on the Philadelphia jet crash found the cockpit voice recorder likely hadn't recorded audio for ...

The cockpit voice recorder, known as the "black box," from a plane that crashed and left seven people dead soon after takeoff from a Philadelphia airport didn't record the aircraft's final moments ...

US investigators have disclosed that the cockpit-voice recorder on the ambulance Learjet 55 which fatally crashed in ...

Jeff Guzzetti, a former NTSB investigator, said that the lack of a functional voice recorder would make investigating the ...

The crash in a residential and commercial area of Philadelphia killed all six people on board the plane and one person on the ...

We now know the cockpit voice recorder, which was recovered from the impact crater 8 feet below the sidewalk, was not functioning, according to an NTSB preliminary report released Thursday.

PHILADELPHIA (AP) — The cockpit voice recorder was not working on a medical transport plane that crashed in Philadelphia in January and likely had not been working for several years, the ...