As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-16 CHECK A .3125 INCH CRACK WAS FOUND IN SHEAR TIE AFT OF BS 500D, ABOVE STR 13 LT. MAINTENANCE REMOVED CRACKED SHEAR TIE AT BS 500D, STR 13 LT; FABRICATED A NEW REPLACEMENT SHEAR TIE PER DWG 69-73057; INSTALLED REPAIR PART IAW B737-300 SRM 51-40-02.