As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PRE-TEST IT WAS FOUND THAT 70/110° NF POSITION TEST WAS EXTREMELY OUT OF LIMITS. MECHANICS SUGGESTED THAT THIS WAS POSSIBLY AN NF BEARING ISSUE. DURING TEARDOWN/INVESTIGATION, IT WAS FOUND THAT THE NF BEARING WAS EXTREMELY WORN. BOTH THE UPPER AND LOWER BEARING RACES HAVE EVIDENCE OF SPALLING. ALL THE BALLS ARE WORN, MAKING THEM SMALLER THAN NORMAL AND THE BEARING CAGE WAS NOT ABLE TO RETAIN THEM PROPERLY