As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING 100 HR INSPECTION SMOKING RIVETS WERE OBSERVED ON THE BOTTOM CENTER DOUBLER OF THE HORIZONTAL STABILIZER. INVESTIGATION REVEALED SPAR CRACK IN WEB AND LOWER FLANGE. HORIZONTAL STAB WAS REMOVED AND SENT OUT FOR SPAR REPLACEMENT.