Incident Summary
The pilot reported that the helicopter experienced a loss of power during cruise flight while attempting to add power for a climb. The pilot stated that N2 decreased concurrent with the activation of visual and audio engine-out warnings. The pilot performed an autorotation to a road. However, after touchdown, the helicopter slid off the road and descended a 50-degree slope in the terrain before coming to rest.
Post-Accident Examination
Post-accident testing of the fuel governor, part number 104100A12-A8, revealed an excessive leakage rate at the bypass valve. Additionally, the deceleration and slope tests of the governor were found to be out of limits. When the governor was retested, it was found capable of normal operation.