WorldUS Navy Says Four People Have Died in a Helicopter Crash in Hawaii ShareTweetEmail The US Navy has reported four people died in a helicopter crash on the island of Kauai in Hawaii. The helicopter was flying in support of a US military training mission and was owned by a contractor. The crash took place shortly after 10 am local time. The helicopter was a Sikorsky S-61N which was likely built between 1959 and 1980. An investigation is being conducted to determine the cause of the crash.