As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING 100 HR INSPECTION OF T/R DRIVE SHAFT/BLOWER SHAFT BEARINGS, AFT BLOWER SHAFT BEARING FOUND TO BE NOISY. BEARING REMOVED AND INSPECTED AND FOUND TO BE ROUGH. FURTHER INSPECTION REVEALED BEARING HAD BEEN REPLACED NEW AT PREVIOUS 100 HR. BEARING REMOVED FROM SERVICE AND REPLACED NEW. MANUFACTURER CONTACTED FOR WARRANTY AND APPROVED. BEARING SPLIT AND FURTHER INSPECTED. BALL BEARING SURFACE FOUND TO BE ROUGH AND PITTED.