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 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.

It is unknown if anyone was hurt after a helicopter was on fire in Mojave Monday afternoon.According to the CHP’s website, an “aircraft emergency” was called on

Add Yahoo as a preferred source to see more of our stories on Google. Two small helicopters collided over Hammonton on Dec. 28, killing both pilots, authorities said. The helicopters "crash landed" at approximately 11:25 a.m., with one bursting into flames ...

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

A plane and helicopter nearly collided near the Hollywood Burbank Airport earlier this month.