As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SHUTDOWN, A LOUD GRINDING AND POPPING WAS HEARD COMING FROM THE TRANSMISSION AREA. OIL COOLER BLOWER ASSY PN 369025630-101 WAS REMOVED AND DISSASSEMBLED FOR INSPECTION. THE LOWER BLOWER BEARING PN 369A5655-3 HAD FAILED. IT IS SUSPECTED THAT THE BEARING CAGE FAILED AS NUMEROUS PIECES OF CAGE MATERIAL WAS RECOVERED. THIS BEARING HAS A RL OF 1200 HOURS. PART TT AT FAILURE WAS 515.4 BEARING RETAINED FOR 90 DAYS AS EXHIBIT.