As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING INSPECTION, EXTREME EXFOLIATION CORROSION WAS DISCOVERED ON THE LT CENTER FLAP BRACKET AT IT’S ATTACHMENT TO THE REAR WING SPAR. THIS IS VERY DIFFICULT TO DETECT WITHOUT REMOVAL OF THE GAP SEALS AND THE FLAPS. (TC NR 20091229004)