The helicopter was operating just above trees with little forward speed when the engine gradually lost power. The pilot was forced to attempt to land in an area covered with small trees. The engine stopped after the main rotor blades struck foliage and the helicopter fell heavily on its skids, which collapsed. The helicopter subsequently caught fire and was burnt out. Examination of the engine discovered that the number two big-end bearing had failed. It was also noted that the engine was internally damaged by pre-crash overheating and scoring. The reason for this damage could not be determined.
