As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CENTER WING UPPER SURFACE BETWEEN RBL AND LBL 94.5 AND 115.8 WAS FOUND WITH CORROSION. MOST CORROSION WAS FOUND IN THE STR-TO-SKIN FASTENERS BETWEEN FRONT SPAR FS 983 TO REAR SPAR AT FS 1212. DAMAGE WAS CLEANED WITH DEPTHS RANGING FROM 0.003 INCH TO 0.081 INCH.