As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) HELISKI OPERATION. PILOT REPORTED BAD VIBRATION IN TURNS AND CONTROLLABILITY CONCERNS, ALSO IN TURNS. RETURNED TO BASE IMMEDIATELY. SHEARED BOLT FOUND WHERE MAIN ROTOR HYDRAULIC DAMPER CONTROL ARM ATTACHES TO STABILIZER BAR CONTROL TUBE ROD END. BOLT WAS CORRODED WITH EVIDENCE OF BEING LOOSE. ALSO BLACK ON NUT AND WASHER. NO OTHER DAMAGE FOUND. ATTACHMENT HARDWARE REPLACED WITH NEW AND AIRCRAFT RETURNED TO SERVICE.