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 624CT. BLENDED AREAS OF LIGHT FRETTING, CORROSION ON THE BOTTOM MATING SURFACE OF PANEL 624CT. ETCHED AND ALODINED AND APPLIED PRIMER TO BLENDED AREAS THAT REQUIRED PRIMER IAW SRM 51-21-00 PG.2 PARA A(2)A-D.