As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLEET WIDE INSPECTION OF PREMATURE BRUSH WEAR. THIS UNIT FOUND TO HAVE EXCESSIVE WEAR. 149.4 SINCE TBO.618 HRS OF BRUSH WEAR REMAINING. TBO 1500 HRS. VENDOR IN CONTACT WITH BRUSH MANUFACTURER. OTHER OPERATORS FINDING SIMILAR SDR ALERT WOULD SPEED RECTIFICATION PROCESS.