As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERMITTENT MOMENTARY NR 1 COWL ANTI ICE LIGHT AT CRUISE OCCURRED 3-4 TIMES THEN REMAINED OUT FOR LAST .45 HR OF FLIGHT. ACFT GROUNDED. OPS CHECK OF NR 1 ENG COWL ANTI-ICE VALVE IAW MM 30-21-860-003 VALVE OPS NORMAL. GROUND VERIFICATION WAS SUCCESSFUL.