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-21 CHECK A 2.875 INCH CRACK WAS FOUND IN STRINGER 15 LT TO FRAME 344 ATTACH ANGLE. MAINTENANCE REMOVED THE CRACKED ATTACH ANGLE BS 344, STR 15 LT; FABRICATED A NEW REPLACEMENT ATTACH ANGLE DWG 69-16970; INSTALLED REPAIR PART IAW B737-200 SRM 51-30-02 FIG 11 PG 1.