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

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 ...

A deadly midair collision occurred in Washington this January. Sixty-seven people died in the accident. A broken altimeter ...

Aircraft flown by PSA Airlines received collision avoidance alerts caused by helicopters five times in the five months prior ...