A mechanical failure, specifically a problem with the main rotor, caused the fatal DPS helicopter crash in Flagstaff, according to a preliminary NTSB report.

A preliminary report points to a significant mechanical problem before a deadly police helicopter crash that happened during a shootout in Flagstaff, Arizona.

Investigators released their preliminary report on the DPS helicopter that crashed in Flagstaff last month, killing both officers onboard. The report found no evidence of maintenance issues or ...

The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the devastating accident that killed all six people on board, according to a ...

LOWER MANHATTAN (WABC) -- The main rotor and roof structure from the deadly helicopter crash last week have been recovered from the Hudson River. It could be the most important piece of evidence yet ...

The main rotor of the doomed helicopter that crashed into the Hudson River was finally recovered Monday — which could provide crucial information as investigators continue to probe what caused the ...

NEW YORK -- The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the devastating accident that killed all six people on board, according ...