As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING AN AIRWORTHINESS CHECK, A CRACK WAS FOUND ON THE UPPER SURFACE OF THE HORIZONTAL STABILIZER ON THE LT SIDE. THE CRACK BEGAN IN THE RIVET LINE OF THE METAL LAP ATTACHMENT POINT ALONG THE TAIL BOOM AT APPROX 3 INCHES FROM THE TE & CURVED FORWARD & OUTWARD TO APPROX 5 INCHES FROM THE TE. CRACK IS MEASURED TO BE APPROX 2.5 INCHES PROTRUDING FROM THE RIVETED SEAM, WHICH IS LONGER THAN THE 2.362 INCHES MAX PERMISSIBLE FOR DRILL STOP.