As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TWO CRACKS IN INBOARD FORWARD RIB OF LEFT HORIZONTAL STABILIZER AT STA 00.000. .25-INCH CRACK ORIGINATING FROM THE EDGE OF THE UPPER AFT FLANGE INTO THE FIRST RIVET. 2.5-INCH CRACK ORIGINATING FROM THE EDGE OF THE LOWER AFT FLANGE THROUGH THE FIRST 3 RIVETS, JUST BEGINNING TO TURN UPWARDS INTO THE WEB OF THE RIB.