As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAILBOOM SUPPORT FITTING CRACKED FROM EDGE THROUGH FIRST SCREW HOLE THEN UP RIVETED FLANGE BETWEEN 3RD AND 4TH FASTENER HOLES. CRACK APPEARS TO START FROM TOOLING MARKS DUE TO STRESS. INCREASE STRENGTH OF MATERIAL, POLISH EDGES TO REMOVE TOOLING MARKS, AND GET A CLOSER MATCH TO CONTOUR OF STABILIZER. SUPPORT ANGLE SENT TO MFG FOR EVALUATION AND WARRANTY CREDIT.