Flight 427 crashed outside Pittsburgh International Aiport on Sept. 8, 1994, killing all 132 onboard. It remains the deadliest in Pennsylvania’s history. But what caused the crash?

The National Transportation Safety Board uncovered more than 15,000 “near-miss events” between helicopters and jets at Reagan National airport in just three years leading up to the American ...

A near-collision between two planes at a major California airport two years ago was caused by an air traffic controller distracted by a third plane, the National Transportation Safety Board said ...

It would take years for the National Transportation Safety Board (NTSB) to complete its investigation into the crash, but experts believe the accident was probably caused by a malfunctioning ...

Flight 427 crashed outside Pittsburgh International Aiport on Sept. 8, 1994, killing all 132 onboard. It remains the deadliest in Pennsylvania’s history. But what caused the crash?