As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - "C" - DURING C-20 CHECK A CRACK WAS FOUND ON THE UPPER HINGE CUTOUT OF THE L1 DOOR AT UPPER CORNER BS 300. MAINTENANCE STOP DRILLED CRACK AND PERFORMED HFEC INSPECTION TO VERIFY CRACK WAS CONTAINED. FABRICATED AND INSTALLED REPAIR DOUBLER IAW B737-200 SRM 52-00-3, FIG.6, PG 10 AND 10A.