As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK THE FRAME 75 FITTING AT STRINGER 1R (12:00 POSITION) WAS FOUND TO HAVE FRETTING CORROSION BETWEEN THE FITTING AND SKIN. MX REMOVED THE CORROSION AND PERFORMED THE REPAIR IAW EC5310-01317, REV B. THE ACFT WAS APPROVED FOR RETURN TO SERVICE.