What was found
MCN - MAJOR REPAIR - DURING C-04 CHECK CORROSION WAS FOUND ON UPPER SURFACE OF R-1 DOOR SILL FLOOR PANEL (222FF), AT INBOARD AFT CORNER FR 20. MAINTENANCE REMOVED AND REPLACED FLOOR PANEL ASSEMBLY IAW T/C C1D25306.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
MCN - MAJOR REPAIR - DURING C-04 CHECK CORROSION WAS FOUND ON UPPER SURFACE OF R-1 DOOR SILL FLOOR PANEL (222FF), AT INBOARD AFT CORNER FR 20. MAINTENANCE REMOVED AND REPLACED FLOOR PANEL ASSEMBLY IAW T/C C1D25306.