As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAIL DEICE INOP IN ICING CONDITIONS. CREW REQUESTED EMERGENCY DECENT TO GET OUT OF ICING CONDITIONS. AT LOWER ALTITUDE SYSTEM STARTED WORKING PROPERLY, SYSTEM WAS CHECKED AGAIN ON THE GROUND SATISFACTORILY. AS A RESULT OF THE WAY THE SYSTEM WAS OPERATING, THE CREW DID NOT WRITE UP ANY DISCREPANCIES. MAINTENANCE PERSONNEL FOUND SEVERAL PIN HOLES IN TAIL BOOTS AND PATCHED AS REQUIRED.