As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT SIDE CABIN BETWEEN STATION -900 LBL -1 FLOOR BEAM HAS CORROSION. GROUNDED - YES. EVALED CORROSION.FASTENER HOLE ELONGATED BEYOND ALLOWABLE LIMITS IAW B737-800 SRM 53-70-51-1A-1.LOCATED DRILLED AND INSTALLED NEW FLOOR SUPPORT IAW BOEING DWG 147A5700 REV B DOT REMOVED.ORIG THICK 0.080, 100 PERCENT MAT LOSS NOTED AT 0.365" LENGTH, 0.470" WIDTH.