What was found
DURING C-CHECK, LT FUSELAGE SKIN AT FRAME 79, STRINGER 5L-6L RIVET SKIN CRACKED. MAINTENANCE REPAIRED LT FUSELAGE SKIN AND INSTALLED SKIN BUSHING AND RESTORED ORIGINAL FINISH ON LT FUSELAGE SKIN AT FRAME 79, STRINGER 5L-6L IAW EC5330-03009. THE ACFT WAS APPROVED FOR RETURN TO SERVICE.