As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT, THE PILOT SELECTED NR 1 ENGINE ANTI-ICE AND THERE WAS NO TEMPERATURE RISE ON THE NR 1 ITT TEMPERATURE INDICATOR. ON RETURN TO BASE, INSPECTION FOUND THE ANTI-ICE TUBE WAS BROKEN JUST AFT OF THE FLARE. THE ANTI-ICE TUBE WAS REPLACED AND THE SYSTEM FUNCTIONED NORMALLY.