As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSTALLED 2 NEW BLADES WITH HIGH VISIBILITY PAINT FROM MFG. ABLE TO PERFORM SPAN AND LATERAL BALANCE TO LESS THAN .02IPS. UNABLE TO REDUCE VERTICAL VIBRATION TO ACCEPTABLE LEVELS IN HOVER TO 120 MPH. INSTALLED ANOTHER WARRANTY BLADE AND WAS ABLE TO TRACK TO MORE ACCEPTABLE VERTICAL VIBRATION LEVELS.