As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-15 CHECK A .5625 INCH CRACK WAS FOUND IN STRINGER TIE CLIP ON AFT SIDE OF BS 597, STR 11 LT. MAINTENANCE REMOVED CRACKED STRINGER TIE CLIP AT BS 597, STR 11 LT; FABRICATED A NEW REPLACEMENT TIE CLIP PER DWG 69-38790; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02 FIG 8.