As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON AFT HOT WATER DRAIN MAST DOUBLER BETWEEN FR 86-FR 87 IN AFT CARGO. REMOVED AND REPLACED AFT HOT WATER DRAIN MAST DOUBLER AND ATTACHING SUPPORT ANGLES. REF SRM 51-41-02 SEE EAMS W/O H5690 SEQ 1645 SN 515 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.