As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) FORWARD PRESSURE BULKHEAD AFT FACE OUTER CHORD SCRATCHED IN BEND RADIUS LOCATED AT LBL46/WL235 AND RBL24/WL268. SUSPECT A SHARP OBJECT WAS USED TO REMOVE SEALANT. FOUND DURING INSPECTION IAW AD/B747/159. SEE ATTACHMENT FOR INVESTIGATION DETAILS. (CASA NR 510001639)