Investigators examining large debris field after deadly medical jet crash in Philadelphia. Here's what to know.

Six people aboard a medical transport plane, along with one person on the ground, died in the fiery crash near a busy mall.

Latest news and live updates after a Black Hawk helicopter collided with an American Airlines jet over the Potomac River this week, killing 67 people.

As investigators attempted to figure out what caused a medical transport jet taking off from Northeast Philadelphia Airport ...

The pilots of a Learjet 55 that crashed and exploded in Northeast Philadelphia have been identified, and newly released air ...

The Learjet 55 went down just after takeoff, creating what witnesses described as a massive fireball, shaking houses and ...

A medical transport jet carrying a pediatric patient and five others has slammed into a Philadelphia neighborhood and exploded in flames.

Air traffic control communications reveal the moments when controllers tried to reach a doomed jet in Philadelphia, which ...

Air ambulance flight crashed near Roosevelt Mall about 30 seconds after taking off from Northeast Philadelphia Airport, ...

Jet Rescue Air Ambulance said it was unlikely anyone on board survived the Friday crash. Nineteen people on the ground were injured, Philadelphia Mayor Cherelle Parker said.

NTSB chair Jennifer Homendy said authorities can still complete their investigation without the recording device, but it is a critical piece and its location remains "the biggest question right now." ...