As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXIING OF FLIGHT TA441 FROM DFW TO SAL, THE AIRCRAFT HAD FAILURE OF ENGINE 1 ANTI-ICE AND RETURNED TO THE GATE FOR MAINTENANCE. THE FAILURE IS DEFERRABLE AS PER MEL 30-21-01 BUT DUE TO RESTICTION ABOUT OPERATIONS ON FORECASTED ICING CONDITION THE AIRCRAFT REMAINED ON GROUND. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE ENGINE 1 ANTI-ICE VALVE IN ACCORDANCE WITH AMM 30-21-01-00-801-A, PERFORMED OPERATIONAL TEST AS PER AMM 30-21-00-710-801-A, THE SYSTEM WORKED NORMAL. THEN THE AIRCRAFT WAS RETURNED TO SERVICE.