As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) EXCESSIVE DISSIMILAR METAL CORROSION CAUSED BY SHEET METAL CLECOS BEING LEFT IN SINCE MANUFACTURE. THEY WERE LOCATED IN THE LEFT-HAND DOOR POST ON BULKHEAD STATION 63.27. NOTE: THIS AREA IS NOT ACCESSIBLE UNLESS THE SKIN IS REMOVED. IT WAS FOUND DURING A 300.