As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING COMPLIANCE WITH AD 78-08-03, FOUND CRACKS IN THE UPPER HINGE REINFORCEMENT BRACKET (PN 17067-18) OF THE VERTICAL STABILIZER. REMOVAL OF THE BRACKET WAS PERFORMED AND A CLOSE INSPECTION OF THE BOLT HOLES IN THE REAR SPAR FOR THE UPPER RUDDER HINGE CASTING REVEALED SIMILAR CRACKS THERE ALSO.