As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF CPCP CHECK INSPECTION, FOUND LEFT HAND WING INTERNAL STA 686.50 FORWARD STRINGER TO RIB ATTACH POINT IS CRACKED, MARKED M2 LOWER. REPAIRED IAW BOEING SRM 57-10-5 AND BSB 727-570127 FIGURE 2. CORROSION TASK CARD NUMBER C57-571-01. NON-ROUTINE TASK CARD NUMBER 106660.