As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED THE RIGHT SIDE HORIZONTAL STABILIZER PNEUMATIC BOOT FAILS TO INFLATE AND HAS ASSOCIATED YELLOW MASTER CAUTION WHEN IN AUTO OR MANUAL MODES. CREW NOTED A BUBBLE AND AREA NOT INFLATING ON UPPER INBOARD AREA OF BOOT. THE MAINTENANCE TEAM CONFIRMED THE DISCREPANCY AND REPLACED THE RIGHT HORIZ STAB TAIL DEICE BOOT WITH NEW. OPERATIONAL CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.