As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND CRACK ON RIGHT SIDE LOWER RUDDER SKIN. THIS IS THE 2ND TIME A CRACK HAS BEEN FOUND IN THIS AREA ON THIS PARTICULAR RUDDER. THE FIRST WAS AT 718.2 HOURS TOTAL TIME. THE SKIN WAS REPLACED AT THAT TIME AND WAS CHANGED AGAIN THIS TIME. SUBMITTER STATED IT SEEMS THERE MAY BE AN ENGINEERING AND/OR A PRODUCTION DEFECT. NINTH OCCURRENCE IN FLEET.