As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE ANTI-ICE FAILED TO OPEN WHEN COMMANDED. CYCLED SWITCH AND VALVE OPENED ON SECOND ATTEMPT. ACFT GROUNDED. IAW WDM 30-21-11-1, 28 VDC PRESENT AT DP103 PIN 1 WITH NR 1 ENGINE ANTI-ICE ON. REPLACED THE NR 1 ENGINE COWL TAI VALVE IAW AMM 30-21-11. LEAK AND OPS CHECKED GOOD. GROUND VERIFICATION SUCCESSFUL.