As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE CPCP CHECK INSPECTION, FOUND LT WING INTERNAL FUEL TANK WS 629.0 FWD STRINGER HAS CRACKED FLANGE. REPAIRED CRACKED STRINGER FLANGE IAW BOEING SERVICE BULLETIN 727-57A159 FIG 4. CORROSION TASK CARD NUMBER C57-571-01. NON-ROUTINE TASK CARD NUMBER 102872.