As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT WING NR 14 SLAT TRACK CUT OUT AFT OTBD. CRACK IS LOCATED ON THE MATING FLANGE WHERE THE CLOSEOUT DOOR RESTS. VERIFIED CRACK USING HFEC IAW NDT SPM PART 6. CRACK TERMINATES AT FASTENER. CRACK IS APPROXIMATELY 1/2 INCHES. REPAIR INSTALLED IAW SRM.