As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 4A INSPECTION THE AFT FUSELAGE SKIN WAS FOUND TO HAVE 4 CRACKS AT A RIVET ON FRAME 79 BELOW STRINGER 05L TOTALING APPROX 8.9MM (.3"). MX REMOVED THE DAMAGE, AND PERFORMED A BUSHING REPAIR IAW DER APPROVED ETD2013-145-21460 AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE.