Incident Summary
A helicopter operating an on-demand offshore flight impacted an oil platform during a landing attempt. The pilot was performing a standard pinnacle approach to the helipad. The approach proceeded normally until the helicopter crossed over the edge of the platform, at which point the helicopter suddenly descended below the intended approach path.
Pilot Account
The pilot reported that an increase of power beyond 100% torque was ineffective in arresting the descent rate. The helicopter continued to descend and subsequently struck the platform. No further details regarding the impact or subsequent events were provided.
Windsock Condition
The platform was equipped with a windsock located on the southeast side of the landing pad. The height of the windsock was such that it intersected the approximate plane formed by the helideck. According to the pilot's report, the windsock was tattered, and "the end of the windsock was wrapped around the pole." The condition of the windsock may have affected its ability to indicate wind direction and speed accurately.
Engine Examination
Following the incident, the helicopter's engine was disassembled and examined. The examination revealed no anomalies in the engine components or systems.