What was found
AFT FUSELAGE EXTERIOR SKIN HAS CRACK INDICATION EXTENDING FROM RIVET AT FRAME 79 @ STR 3 LH- REMOVED RIVET FOR NDI INSP. PERFORMED HF EC INSPECTION OF INDICATED LOCATION, CRACK FOUND AND END MARKED. CUT HOLE IN AFT SKIN AT FR 79, STR 3 LH TO REMOVE CRACK. INSPECTED DAMAGE AREA AFTER CUT OUT, NO DEFECTS NOTED. FABRICATED AND INSTALLED BUSHING ON SKIN AT FR 79, STR 3 LH.