As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY: DURING C-CHECK AT KDHN A CRACK WAS FOUND ON L1 DOOR AFT BEAM NR 3. CORRECTIVE ACTION: COMMERCIAL JET IN KDHN STOP DRILLED CRACK AND VERIFIED BY NDT. THEY INSTALLED NEW REPAIR DOUBLER AND GUSSET FITTING ON L1 DOOR NR 3 BEAM AFT AREA, IAW DC9 SRM 52-05 FIGURE 85 SHEET 4.