As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 180 WING ANTI-ICE FAILED DURING ICING TEST. ICE PROTECTION LIGHT NOT ON, TAT 4 DEG. DURING TROUBLESHOOTING FOUND LT AIR BLEED Y DUCT CRACKED. R & R LT Y DUCT IAW AMM 36-11-09 & ETN-EM-30-037. ANTI-ICING SYS OPERATIONS TESTED OK IAW AMM 30-00-00-700-802-A.