As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(LOG 2070376) DURING INSPECTION FOUND CRACK ON STA 663, VAPOR BARRIER LEFT LOWER BEAM BTW LBL 6.15 TO LBL 10.54. AT MLG W/W. CRACK ON STA 663, VAPOR BARRIER LEFT LOWER BEAM BTW LBL 6.15 TO LBL 10.54. AT MLG W/W. WAS REPAIRED PER B737-800 SRM 57-10-10-2R-2.