As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK THE LT AFT FUSELAGE SKIN WAS FOUND TO BE CRACKED AROUND A RIVET AT FRAME 79 BETWEEN STRINGERS 6L/7L. MX REAMED OUT THE SKIN CRACK AND PERFORMED A BUSHING REPAIR IAW EC5330-02622. THE ACFT WAS APPROVED FOR RETURN TO SERVICE.