As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERGRANULAR CORROSION WAS FOUND ON THE LONGERON CHANNEL AT FUSELAGE BUTTOCK LINE 0, WING STATION 403.0. THIS CORROSION NOTED ON THE LT SIDE, 10 INCHES FORWARD OF THE REAR LOWER WING SPAR. ACCESS THROUGH THE LT WING IB DRY BAY PANEL. (K)