A preliminary report points to a significant mechanical problem before a deadly police helicopter crash that happened during a shootout in Flagstaff, Arizona.
The NTSB released its initial report on the deadly helicopter crash in Flagstaff that left two DPS crew members dead.
A midair collision involving two helicopters in Hammonton, New Jersey, killed one person and critically injured another, federal authorities say. How did two small helicopters crash into each other ...
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