As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRACK FOUND AT CENTER WING BOX REAR SPAR VERTICAL PRESSURE WEB ALONG VERTICAL PRESSURE DECK BETWEEN LBL 31.83 AND LBL 40. CRACK LENGTH 2.5" REF AAR N/R 9936862 ACCOMPLISHED REPAIR AS REQUIRED PER B737-800 SRM 57-10-10-2R-3 AT CENTER WING BOX REAR SPAR VERTICAL PRESSURE WEB STA 663.