As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*** WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK *** INTERNAL MANUFACTURING DAMAGE WAS FOUND AT RIB 7 OF RT WING SLAT NR 4. SLAT WAS REPLACED PER AMM TASK 27-81-08-400-801A. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.