In addition to the injuries on the ground, homes and cars were set ablaze when the Learjet 55 crashed in a massive, fiery explosion sending parts of the plane and other debris far and wide.

Investigators have located the Learjet’s two engines, and retrieved the cockpit-voice recorder, disclosing that it was found at the point of impact at a depth of 8ft (2.4m).

Communications with the ambulance Learjet 55 which came down in Philadelphia indicate that the accident occurred just after take-off, as the aircraft was transferred to departure control.

A Learjet 55 medical aircraft went down at approximately 6:30 p.m. in Northeast Philadelphia off the busy Roosevelt Boulevard, lighting up the rainy night sky with a fireball explosion upon impact.

A medical transport jet crashed in Philadelphia shortly after takeoff on Friday. Six people were on board the Learjet plane when it went down, authorities said. The NTSB said investigators have ...