This is the text from the Preliminary Report.  By its very nature, the details are subject to change and should not be relied upon. The Final Report for this incident will be issued in due course:-

On November 5, 2011, about 1620 eastern standard time, a Robinson R22 BETA, N413RM, operated by Ocean Helicopters Inc., was substantially damaged during an autorotation, following a loss of rotor rpm near West Palm Beach, Florida. The certificated private pilot and passenger incurred minor injuries. The personal flight was conducted under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no flight plan was filed for the local flight, which departed North Palm Beach Country Airport (F45), West Palm Beach, Florida, about 1530.