As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FRAME TO SKIN SHEAR TIES AT BS 520L ARE BROKEN FROM STR 17L TO STR 20L. MAJOR REPAIR ACCOMPLISHED. REMOVED DAMAGED SHEAR TIES AND REPLACED WITH NEW SHEAR TIES, P-N 140N2002-53 AND 140N2002-5 5 PER BACO DWG 140N2002 AND INSTALLED PER SRM ON NON ROUTINE 20008.