As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION AROUND ALL FASTENER HOLES ON OB FLOORBOARD SUPPORT JUST IB OF L-4 DOOR LWR SILL BS 1640-BS 1681.8, LBL 58.22. FOUND CORROSION ON LOWER AFT SILL SECTION OUT OF LIM SRM 53-60-15 DET V BLEND CORROSION LEW SILL FWD SECT IN LIM IAW SRM 53-60-15 TREATED 51-40-01. REPAIRS AFT SECTION AT STA 1661 TO 1681, LBL 65 51-P40-02. FAB AND INST REP SRM 51-40-02. (K)