As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED FOR HEAVY MAINTENANCE. CORROSION ON CLOSEOUT WEB STATION 1325 LEFT BUTT LINE 11. CLOSEOUT WEB IS EXFOLIATED COMPLETELY THROUGH AND FOUND TO BE OUT OF LIMITS IAW SRM 53-60-53. FABRICATED AND REPLACED IAW DRAWING 451T2504.