Accident Overview
A non-instrument rated commercial pilot with 18,913 hours of flight experience lost control of a helicopter after encountering adverse weather conditions while maneuvering to land at an offshore platform. The helicopter subsequently impacted the ocean and sank in water depths ranging from 150 to 180 feet. Recovery of the helicopter's remains was delayed for several days due to the prevailing adverse weather conditions.
Wreckage Examination
Flight control continuity could not be established due to the extensive fragmentation of the wreckage. Examination of the wreckage did not reveal any anomalies or discrepancies with the airframe or powerplant. The emergency floats were found not to have been deployed. The helicopter was determined to have been within weight and balance limits during all phases of the flight.
Communications and Weather Conditions
Radio communications between the operator's communications center and the pilot revealed misinformation concerning operational and weather conditions. Witnesses and company weather reporting stations reported that at the time of the accident, visibility varied between 1/4 statute miles and 3 statute miles, overcast ceilings ranged from 100 feet above ground level to 1,300 feet above ground level, and there were thunderstorms and rain.
Conclusion
The pilot lost control of the helicopter after encountering adverse weather conditions. The investigation noted no pre-existing mechanical issues with the helicopter.