As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING PRE FLIGHT INSPECTION FLIGHT CREW HEARD ABNORMAL NOISE COMING FROM ENGINE WHILE THEY TURNED THE PROPELLER. MAINTENANCE WAS NOTIFIED AND ENGINE WAS INSPECTED, SUSPECT REAR BEARING FAILURE, OIL SYSTEM INSPECTED AND FOUND TO HAVE NO METAL CONTAMINATION. ENGINE REMOVED AND HAS NOT YET BEEN SENT FOR REPAIR. (TC NR 20070212005)