The Learjet, carrying a pediatric patient and five others, crashed on Friday, killing all on board. On the ground, one person was killed and at least 19 others were injured, officials said.

The National Transportation Safety Board has recovered two importance pieces from the wreckage of the medevac plane that crashed in Philadelphia last week.

The Learjet 55 went down just a minute after takeoff, crashing near a mall in northeast Philadelphia and setting ablaze homes and vehicles, officials said.