What was found
C-CHECK, LT FUSELAGE AT STA 1129, 6 INCHES BELOW HORIZ STAB HAS POSSIBLE CRACK COMING FROM RIVET HEAD. HFEC INSP C/W IAW 737 NTM PT6 SRM 51-00-00, VERIFIED 1 INCHES CRACK. CUT OUT DAMAGE IAW 737 SRM 53-30-3, FABRICATED REPAIR PARTS IAW 737 SRM 53-30-3, INSTALLED PARTS IAW 737 SRM 53-30-3.