Event Summary
During a flight, the pilot reported that the aircraft suffered a hydraulic system failure, which was then followed by a loss of engine power. In response, the pilot executed an emergency autorotation landing in a pasture. The landing resulted in substantial damage to the aircraft.
Investigation Findings
A post-crash examination revealed that hydraulic fluid had leaked out of the system. However, investigators were unable to identify any pre-existing failure or malfunction within the powerplant system that could have caused the loss of power. Subsequently, an engine test run was conducted, during which the engine operated within the manufacturer's specifications, with no anomalies detected.