Federal investigators have pulled intact data cards from a state police helicopter and Cessna aircraft that collided near a runway in central Pennsylvania.

A fighter jet crashed and erupted into flames at Marine Corps Air Station Miramar in California on Friday, sending smoke billowing into the sky that could be seen from miles away.

A series of human and oversight failings is being eyed by federal investigators as possible contributors to the fatal crash of a medical jet in Northeast Philadelphia last year, according to documents filed by the National Transportation Safety Board.

Investigators are trying to understand why a small plane crashed into a hovering Pennsylvania State Police helicopter.

Federal investigators are providing a new look at the moments leading up to and following last year's deadly medical jet crash in Philadelphia.