Departure and Weather Conditions
The helicopter departed at dawn for a visual flight rules (VFR) flight from a coastal base en route to an offshore oil platform. The flight was conducted in instrument meteorological conditions (IMC), with a low ceiling and rain showers passing through the area.
Event Sequence
After the helicopter flew past the shoreline, it penetrated a heavy rain shower. The pilot descended the helicopter and attempted to maintain visual contact with a light on an oil platform located in his line of sight.
Impact and Wreckage Examination
The right skid of the helicopter dipped into the water, causing the helicopter to tumble forward and impact the water. Examination of the wreckage did not reveal any mechanical malfunction.
Passenger Account
The passenger reported that it was dark during the departure, with the light on the rig being the only thing visible. He remembered the pilot flying the helicopter into the water with no warning lights or horns activated prior to impact.