As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, FOUND AFT CARGO DOOR LWR BEAM AFT DOUBLER HAS CORROSION AROUND FASTNERS; PERFORMED DVI BLENDED PERFORMED HFEC ALODINED, PRIMED AND TOPCOATED IAW EA E15-993-01. THIS ITEM HAS BEEN CLASSIFIED AS A LEVEL 2 CORROSION.