A long list of things went wrong in January and contributed to the collision between an Army helicopter and an American ...

An NTSB investigation into a fatal helicopter-airplane collision in D.C. revealed a faulty helicopter altimeter and prior ...

The NTSB concluded three days of investigative hearings into the collision between an Army helicopter and a passenger plane ...

Air traffic controller failed to notify commercial plane crew about approaching Army helicopter before Washington D.C.

At their closest points, helicopters and planes routinely flew within 75 feet near the airport, according to the NTSB.

Investigators found the helicopter was flying higher than it should have been over the Potomac River in Washington. Its ...

Investigators have so far highlighted several factors that may have contributed to the crash, which killed 67 people in ...

The communications between pilots and air traffic control were laid out in a visual timeline in Day One of the NTSB ...

No survivors have been found from a Virginia plane crash. F-16 fighter jets caused a sonic boom while investigating the unresponsive plane over DC.