As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVAL OF THE SURFACE DE-ICE BOOT, A SMALL CRACK APPROXIMATELY .6250 INCH LONG WAS FOUND RADIATING FROM A RIVET HOLE ON THE LEFT HORIZONTAL STABILIZER AT STA 63.0. THE CRACK WAS RADIATING OUTBOARD AND AFT. CRACKED AREA WAS REMOVED AND A FLUSH DOUBLER WAS INSTALLED.