As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: ENIGNE NUMBER 1 ANTI-ICE FAILED WHILE DESCENDING INTO ICING CONDITIONS, HAD TO SHUTDOWN NUMBER 1 ENGINE AS WELL; AIRCRAFT DIVERTED TO AND LANDED SAFELY AT BWI. **SUPPLEMENTAL REPORT FOR (AALA202412054178): TROUBLESHOOT PER FIM 30-21-00-810-807. FOUND ENGINE-1 COWL VALVE LIGHT ON. DID NOT TURN OFF WITH PNEUMATIC PRESSURE. REMOVED AND REPLACED COWL THERMAL ANTI-ICE VALVE ENGINE-1. PER AMM 30-21-11**(CLOSED).