As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A SEGMENT OF THE TRIM TAB OF A MAIN ROTOR BLADE WAS LOST DURING FLIGHT. THE TRIM TAB WAS REPAIRED 201FHRS BEFORE THIS WAS DETECTED. THE SITUATION WAS DETECTED DURING A 100HRS INSPECTION. REPAIRED THE MAIN ROTOR BLADE BASED ON AN ENGINEERING DISPOSITION FROM THE OEM UNDER WORK ORDER 000178. THE MAIN ROTOR BLADE WAS RELEASED.