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.

A National Transportation Safety Board report released Tuesday shed more light on a crash involving an Arizona Department of Public Safety helicopter in Flagstaff that left two DPS crew members dead.

One person was killed in a helicopter crash in a remote area outside Mojave on Monday afternoon, fire officials said.

Authorities released a preliminary report on February's helicopter crash in Flagstaff that killed a DPS pilot and a trooper/paramedic.

A helicopter crash in Evergreen on Sunday afternoon left a road closed as emergency responders worked the scene, according to the city’s fire department. The crash occurred at about 3:12 p.m. on South ...