As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE ANTI ICE WAS TURNED OFF DURING ENGINE SHUTDOWN. NR 1 COWL VALVE REMAINED OPEN WITH SWITCH IN OFF POSITION. GROUNDED - YES. ACCOMPLISHED FIM 30-21 TASK 804. INTERMITTENT FAULT. NR 1 ENG COWL ANTI ICE VALVE & SWITCH OPS CHECK GOOD. NO HISTORY 30 DAYS.