As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING D-CHECK INSPECTION, CORROSION WAS FOUND ON THE LOWER FORWARD AND AFT FLANGES OF THE FLOOR BEAM AT STATION 877. REMOVED ALL CORROSION AND BLENDED TO A 63 MICRO INCH FINISH. INSTALLED TWO 24.0 INCH .063 AISI 301 1/2H DOUBLER IAW EO 9503211. 8110-3 ISSUED BY DER SW-713. (M)