As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) HELICOPTER IN HOVER, ENGINE DECELERATED TO IDLE. THROTTLE CONTROL IN FULL POSITION. PILOT AUTOROTATED TO RAMP. THROTTLE ROLLED BACK TO IDLE AND THEN BACK TO FULL AND ENGINE RESPONDED NORMALLY. FUEL AND AIR OF FCU AND GOVERNOR WERE LEAK CHECKED OK. FCU AND POWER TURBINE GOVERNOR WERE REPLACED. ALSO, THE COMBUSTION LINER AND FUEL NOZZLE WERE REPLACED. PART TC: 1,852.