As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW REPORTED THEY WERE DESCENDING WITH THE WING ANTI-ICE SYSTEM ON. THEY HEARD A LOUD POP AND RUSH OF AIR FOLLOWED BY THE RED ICAS (WING ANTI-ICE LEAK) POSTING. CREW FOLLOWED THE AFM. INSPECTED TAIL AND FOUND ANTI-ICE DUCT BLOWN APART. UNDER INVESTIGATION.