As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE LINE OPERATIONS AT ILN, MAINTENANCE DISCOVERED CORROSION ON THE FUSELAGE SKIN RESULTING IN THE DISCOVERY OF CORROSION ON THE INTERNAL DOUBLER P/N 5910158-24. THE DAMAGE TO THE INTERNAL DOUBLER WAS TRIMMED OUT AND A NEW SECTION SPLICED IN IAW DC-9 SRM 53-04, FIG. 12 C. THE INTERNAL DOUBLER WAS FABRICATED FROM 7075-T6 X .063". OTHER PERTINENT DETAILS OF THIS REPAIR CAN BE FOUND IN W.O. 2002908. REF: REA D953-45018-MR.