Controllers approved the request. Roughly 20 seconds later, the aircraft collided. The NTSB has recovered all flight data recorders and pulled the wreckage of both aircraft from the Potomac.

Additionally, according to the NTSB's report, although the medical jet's flight crew had been in communication with an air traffic control tower at Northeast Philadelphia Airport, where the flight ...

At about 4:55 p.m., there was a crew change at Suburban Station. When the train was at 30th Street Station, the NTSB says the train's engineer received a call at 5:07 p.m. from SEPTA's chief ...