As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF DEFECT 60413749 CORROSION FOUND ON SKIN AT LAV VENT HOLE. GROUNDED - YES. DAMAGE FOUND TO BE 100% THRU, CUT OUT DAMAGE & REPAIRED SKIN IAW B737-800 SRM 53-70-01-2R-3 THIS IS A CAT B REPAIR WITH AN INSP THRESHOLD OF 67, 260 CYCLES TOTAL & 5,000 CYCLE INTERVAL W = 3 O = .1255 R = 0 L = 4 D = .125.