As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C-CHECK - THERE ARE SEVERAL AREAS OF FRETTING, CORROSION ON THE BOTTOM MATING SURFACE OF PANEL 624BT. BLENDED AREAS OF LIGHT FRETTING CORROSION ON THE BOTTOM MATING SURFACE OF PANEL 624BT. REPROTECTED THE REQUIRED AREAS WITH ALODINED IAW SRM 51-21-00.