As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN ENGINE ANTI-ICE SELECTED, BRIGHT BLUE COWL VALVE LIGHT REMAINS BRIGHT WITH AMBER TAI INDICATION ON UPPER DISPLAY INTERMITTENT. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 ENG ANTI-ICE VALVE IAW AMM 30-21-11-400-9-801. OPS AND LEAK CHECKED NORMAL