As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK INSPECTION, CORROSION WAS FOUND ON LT WING LOWER SKIN AT AFT SPAR NEAR RIBS 4 AND 7. CORROSION WAS REMOVED AND BLENDED IAW SRI REF: DP/TS-3-3/11-15470 BY TECH SERVICES UNDER W/O 17010. APPROVED UNDER STRUCTURAL REPAIR APPROVAL SHEET (SRAS) DO/TS-30300/11...6527. SUPPLEMENTARY INSPECTION TASK: DVI OF BLENDED AREA FOR NEW CORROSION.