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, HEAT STRESS WAS DETECTED ON NUMBER THREE PYLON INBOARD AND OUTBOARD PLANK PLATING. REPAIR ACCOMPLISHED REMOVAL OF AFFECTED AREAS, FABRICATION AND INSTALLATION OF NEW PLANK PLATINGS IN ACCORDANCE WITH DOUGLAS DRAWING 5753265 AND ENGINEERING ORDER 54-DC8-896.