As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 500-HOUR INSPECTION, FOUND YELLOW BLADE FREQUENCY ADAPTER CRACKED AT EDGE OF KEVLAR MATING SURFACE. THIS IS FIRST OCCURRENCE OF THIS TYPE ON THE 3 AIRCRAFT OF SAME TYPE OPERATED A TOTAL OF 1200 HOURS. NO REASON FOUND FOR DEFECT. (X)