As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-04 CHECK GALVANIC CORROSION WAS FOUND ON THE UPPER SURFACE OF FLOORBEAM Y-512 ON FORWARD SIDE OF FR 66 TO FR 66 + 127MM. MAINTENANCE BLENDED OUT CORROSION ON UPPER SURFACE OF FLOORBEAM Y-512, FORWARD SIDE OF FR 66; PERFORMED 10 X VISUAL AND HFEC INSPECTION TO VERIFY NO CRACKS EXIST. TREATED DAMAGED AREA, PRIMED, APPLIED TOP COAT; REPAIR ACCOMPLISHED IAW AWA ER 26-5343-03104-SS1.