As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON INITIAL INSPECTION, FOUND HORIZONTAL STABILIZER DE-ICE TEST WOULD NOT CYCLE FULL AMOUNT OF CYCLES AND WOULD SKIP. UPON FURTHER INVESTIGATION, FOUND LEFT HORIZONTAL STABILIZER BURNED ON UPPER OUTBOARD LEADING EDGE. REPLACED LEADING EDGE WITH NEW. OPERATION CHECKED GOOD.