As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT FELT RESISTANCE IN THE FORE AND AFT CYCLIC PITCH CONTROL ON APPROACH. TROUBLESHOOTING AND TALKING TO TECH REP, DETERMINED THAT THE PITCH MAIN ROTOR SERVO IS FAILING INTERNALLY. THIS SERVO CONTROL WAS R & R, WITH THE SUBSEQUENT OPERATIONAL GROUND AND FLIGHT CHECKED GOOD. NO DEFECT NOTED. ACFT WAS RETURNED TO SERVICE.