As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION DAMAGE WAS FOUND ON THE LT UPPER WING SKIN P/N 65C17191-1 AT THE REAR SPAR AT APPROXIMATELY WS 442.0. THE CORROSION WAS REMOVED AND TRIMMED AND A REPAIR SCHEME WAS PROVIDED BY BOEING ENGINEERING. THE CORROSION AREA WAS REPAIRED PER BOEING INSTRUCTIONS AND A 8110-3 STRUCTURAL SUBSTANTIATION FOR WAS ISSUED.