National Transportation Safety Board

摘要

On August 10, 2005, a Sikorsky S-76C+ helicopter, operated by Copterline under Finland registration OH-HCI, departed Tallinn, Estonia, for Helsinki, Finland. The helicopter experienced an upset and crashed into the Baltic Sea, killing all 12 passengers and 2 pilots. This accident is the first time that the National Transportation Safety Board has participated in a helicopter accident investigation in which a flight data recorder (FDR) was on board. Importantly, without the FDR data, investigators would not have been able to identify the airworthiness issue that resulted in three urgent safety recommendations made by the Safety Board on November 17, 2005 (A-05-33 through -35).