As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, FOUND CORROSION AT FWD CARDO DOOR AFT FINGER DOUBLE. REMOVED DAMAGED FINGER DOUBLER. LOCATED DRILLED AND TREATED NEW DOUBLER. INSTALLED AND TOPCOATED NEW DOUBLER IAW SRM 53-21-11. THIS ITEM HAS BEEN CLASSIFIED AS A LEVEL 2 CORROSION.