As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A ROUTINE INSPECTION, A CRACK WAS IDENTIFIED IN THE RT CLOSE OUT RIB. THE CRACK WAS FOUND FROM THE FORWARD ROW OF LOCK FASTENERS IN THE AFT TRUNNION SUPPORT TO THE AFT SIGNAL CONDITIONER MOUNTING UPRIGHT. THE CRACKED MEASURED OUT TO 2.60 INCHES IN LENGTH. ALL TRUNNION SUPPORT HOLES ARE WITHIN TOLERANCE. THE CLOSE-OUT RIB WAS REPLACED WITH NEW.