As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HANGER ASSY HAS HIGH FREQUENCY VIBRATION COUPLING AND BEARING HANGER HAD PRIMER COAT. NO DEFECTS NOTED TO CAUSE HIGH FREQUENCY. DISASSEMBLED, STRIPPED PRIMER, CLEANED & VISUALLY INSPECTED ALL PARTS. HAD CAD PLATING TOUCHED UP ON COUPLING. REASSEMBLED, TORQUED & SAFTIED IAW 412-CR&O INSTALLING NEW SEAL & PURGED BEARING WITH MOBIL 28 AND REPACKED FLEX COUPLING WITH GREASE DATED 9-20-01.