As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK, THE UPPER SURFACE OF RT AILERON TAB WAS FOUND DELAMINATED AT OUTBOARD END BETWEEN WBL 414.25 AND WBL 415.25. MAINTENANCE REMOVED DAMAGE FROM UPPER SURFACE OF RT AILERON TAB AND PERFORMED BOND REPAIR IAW B737-300 SRM 51-70-07, FIG 9.