As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WE ARE DOING A 12 YEAR INSPECTION ON AIRCRAFT, AS WELL AS SEND IT OUT FOR PAINT. THE MAIN ROTOR ANTI-VIBRATOR WAS REMOVED FOR CHECK AND MODIFICATION. WHEN SPRINGS WERE REMOVED, ONE WAS FOUND TO BE BROKEN 40 MM FROM OB END. THIS AREA IS HIDDEN BEHIND SIDE COVERS. (TC NR 20070205001)