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 FOUND CRACK .5 INCH IN LENGTH AT R1 DOOR CUTOUT ANGLE ON BS 294.5 AND BS 294.6, BETWEEN STRINGER 7R AND STRINGER 8R. MAINTENANCE REMOVED DAMAGED AREA IAW BOEING 737-300 SRM 51-70-11 AND FABRICATED NEW ANGLE IAW BOEING 737-300 SRM 51-70-11. INSTALLED FABRICATED REPAIR PARTS IAW BOEING 737-300 SRM 51-70-11.