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. LEVEL 2 CORROSION WAS FOUND AT RT WING NR 2 FLAP TRACK SUPPORT ACTUATOR FITTING FASTENERS . FASTENERS WERE REMOVED AND REPLACED IAW AMM 57-54-21-000-801A. AIRCRAFT REMAINS OUT OF SERVICE FOR HEAVY CHECK COMPLETION.