As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE OUTBOARD ACTUATOR ATTACH RIB STIFFENER ON THE NR 2 SLAT ACTUATOR WAS FOUND CRACKED. THE DAL MFG PART NUMBER FOR THE INBOARD AND OUTBOARD STIFFENERS IS (57-0367-002). THE ERA REPLACED BOTH THE INBOARD AND OUTBOARD ATTACH RIB STIFFENERS PER EO 4-59271-3AD.