As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COATING FLAKING OFF INNER DIAMETER OF MAIN ROTOR STATIC MAST. COATING CHIPS FALLING INTO MAIN ROTOR TRANSMISSION. CAUSE OF FLAKING UNKNOWN. NO FACTORY REPAIR AUTHORIZED IN THE HMI. FACTORY REPS HAVE NOT YET AUTHORIZED A REPAIR. EFFECT ON MAST AND TRANSMISSION?