As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN STA 520 FRAME AND CHORD IS BROKEN OUT BETWEEN STR 17L AND STR 18L. MAJOR REPAIR ACCOMPLISHED: REMOVED DAMAGED FRAME & CHORD SECTION AND REPLACED FRAME SECTION AND FABRICATED A DOUBLER PER DWG 143N1027, REV. A, AND A NEW FAILSAFE PER DWG 143N1026, REV. B, AND INSTALLED PER DWG 143N1004 AND 143N1005 .