At the invitation of the FAA, I talked about these issues at the FAA Runway Safety Symposium in Alaska on April 24, 2002, ...

The NTSB has located the cockpit voice recorder of a Learjet 55 aircraft that crashed in Philadelphia Friday evening.

Former NASA crash investigator Ken Christensen analyzes the Philadelphia medical jet crash on ‘Fox News Live.’ ...

A Learjet 55 was transporting a young girl home to Mexico after she received “life-saving treatment” from Shriners Children’s Philadelphia. The jet had just taken off from Northeast ...

PHILADELPHIA, Pa. — The medical jet transporting a pediatric patient and her mother left a “huge” hole in a row house as it came crashing down into a residential neighborhood on Friday night, ...

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.

The Learjet that crashed in Philadelphia on Friday night while transporting a mother and her child had flown in Arizona earlier that week on Monday and Tuesday. The medical transport flight was ...