As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE C CHECK INSPECTION, A CORROSION BULGE AND POPPED RIVET HEADS WERE DETECTED ON THE RIGHT AILERON LOWER PLATING BETWEEN STATIONS XA 605 AND XA 622. REPAIR ACCOMPLISHED REMOVAL OF DAMAGED PLATING, FABRICATION AND INSTALLATION OF A NEW LOWER PLATING IN ACCORDANCE WITH FAA DER APPROVED DRAWING F03-R02 AND ENGINEERING ORDER 27-DC8-905-925.