U.S. chopper crash in Okinawa last August caused by "human error"

The U.S. Air Force on Tuesday attributed the crash of one of its helicopters in Okinawa last August to "human error," according to a local mayor who was briefed on the accident.

The Air Force's 18th Wing at Kadena Air Base said the HH-60 helicopter was flying over Camp Hansen with a second chopper but a miscommunication between the pilots led the aircraft to nosedive and crash, said Mayor Atsushi Toma of Ginoza village, which hosts part of the camp.

The crash in a mountainous area of the Marines' camp on Aug. 5 killed one of the helicopter's four crew members and stoked local concerns about hosting U.S. military facilities.