Incident Overview
Approximately 20 minutes after departure on a cross-country flight, the pilot observed that the clutch warning light had illuminated and detected a distinct odor of burning rubber. In response, the pilot initiated a power-on autorotation. When the aircraft descended to about 50 feet above ground level, a loud "pop" was heard, and the rotorcraft immediately dropped to the ground. After touchdown, the aircraft skidded approximately 15 feet before a skid collapsed, causing the rotorcraft to roll over onto its side.
Post-Inspection Findings
A subsequent inspection of the rotorcraft revealed that the upper clutch actuator bearing had failed. The maintenance records indicated that all required inspections concerning the bearing assembly had been completed in accordance with the manufacturer's schedule. The manufacturer's procedures specify that both the pilot and mechanic must listen for unusual bearing noise at specific intervals during inspections.
Operational Context
The event occurred during a cross-country flight, and the pilot's prompt actions included the execution of a power-on autorotation after noting the warning indicators and smell. The incident concluded with the aircraft coming to rest on its side after the skid failure.