As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE PERIODIC INSPECTION THE UPPER RT FITTING WAS FOUND WITH 25 INCH CRACK ON ITS BOTTOM ATTACHMENT FLANGE AND THROUGH ONE OF THE 4 REINFORCEMENT RIBS. A NEW FITTING WAS MATCH DRILLED AND INSTALLED. THIS IS A FAIRLY COMMON DEFECT THAT OFTEN REPEATS ITSELF ON AN AIRCRAFT BUT HAS BEEN KNOWN NOT TO CRACK ON SOME AC FOR REASONS UNKNOWN. (K)