As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR WAS REPORTED AS SURGING WITH EVERY COLLECTIVE MOVEMENT. LINEAR ACTUATOR DISCONNECTED FROM GOVERNOR LEVER AND LEVER WAS FOUND TO BE VERY DIFFICULT TO ROTATE. WHEN FORCED TO ROTATE THE ARM WOULD RELEASE AND BIND INTERMITTENTLY. GOVERNOR REPLACED AND A/C RETURNED TO SERVICE.