As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN FLOOR SUPPORT BRACKET HAS CORROSION IN MANY FASTENER HOLES BETWEEN STA 986.5 TO 967.MARKED IN RED. GROUNDED - YES. REMOVED CORROSION ORG THICK 0.80. REMAINING THICK 0.060. REMOVED 0.020 OUT OF LIMITS IAW B737-800 SRM 53-70-51-1A-1 & DRILLLED TO FIT NEW FLOOR SUPPORT IAW B737-800 51-40-05 & BAC DWG 140A99870 REV-. PART INSTALLED ON G1817380.