As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MX PERFORMING INSP IT WAS NOTED THAT THE LWR RUDDER RT SIDE UPPER REPAIR ON THE L/E IS CRACKED FIN STA 170. THE EXISTING REPAIR WAS REMOVED AND NEW DOUBLER WAS FABRICATED FROM 301 1/4 HD .012" DIM 25" X 12". INSTALLED REPAIR, NO OTHER DEFECTS WERE NOTED. ACFT WAS RETURNED TO SERVICE.