As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING REPLACEMENT OF LEFT AND RIGHT LOWER WING SKINS, LEVEL 2 CORROSION WAS FOUND ON THE FORWARD SPAR CAPS IN THE AREAS BEHIND BOTH LEFT AND RIGHT NACELLE FIREWALLS. THESE AREAS CANNOT BE VISUALLY INSPECTED WITHOUT REMOVAL OF THE NACELLES. LEFT SPAR CAP REPLACED. RIGHT SPAR CAP REPAIRED. PART TC: 30,073. ACFT TT: 24,348 HOURS.