As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN MAIN EQUIPMENT CENTER (MEC) STRINGER 36L FOUND DEFORMED AND RIVIT HOLE CRACKED AT BS 420. EXISTING REPAIR REMOVED, NEW CHORD FABRICATED PER DRAWING 65B09014, FOI CARRIED OUT OER BAC 5423 AND NEW CHORD INSTALLED PER B747 SRM 51-30-02.