As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON FLOORBEAM STA 947.5 JUST O/B OF LAV D INBOARD AFTMOUNT FITTING. DOT Z617. GROUNDED - YES. REMOVED CORROSION IAW B737-800 SRM 53-70-51-1A.1. ORIG MAT. IS .180, REMAINING MAT IS .095. MAT LOSS OF .085 IS BEYOND ALLOWABLE LIMITS. REMOVEDUPPER T-CAP CHORD AND REPAIRED AREA IAW B737-800 SRM 53-70-51-2R-5 REPAIR ALTERNATIVE 2 AND ALASKA EA 800-53EA-23292 REV OO. THIS IS A CAT A REPAIR.