Investigators examining large debris field after deadly medical jet crash

A Learjet crashed in Philadelphia, killing all six onboard and injuring 19 on the ground. The crash involved a mother and daughter returning from medical treatment. The NTSB is investigating, and Jet Rescue Air Ambulance claims the plane was well-maintained. The incident follows another aviation accident involving a Blackhawk helicopter. Casualties include one death and several injuries treated at a local hospital.

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