As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A HOVER WHILE PREPARING TO TAKEOFF, THE ENGINE DECELERATED. A HOVERING AUTOROTATION WAS SUCCESSFULLY ACCOMPLISHED. UPON LANDING, THE ENGINE STABILIZED AT 40 PERCENT N WITH THE THROTTLE FULL OPEN AND THE COLLECTIVE FULL DOWN. FUEL CONTROL MALFUNCTION.