As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WINDOW FORGING BETWEEN STA 1020-1040 HAS CORROSION COMING OUT FROM UNDER THE SEALANT IN MAIN CABIN ON THE RIGHT SIDE. REMOVED WINDOW FORGING PER 747 SRM 51-30-02, WINDOW FORGING FOUND IT WITHIN LIMITS PER ECRA 3203-53-047-2. INSTALLED WINDOW FORGING PER 747 SRM 51-30-02 AND SEALED PER 747 SRM 51-10-06.