As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK, LEVEL 2 CORROSION WAS FOUND ON PAX FLOOR STRUCTURE (WEB/SILL) AT FRAME 14 RBL 49. WEB/SILL WAS REMOVED AND REPLACED IAW SRM 51-43-02. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.