As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG NR 1 TAI LIGHT ILLUMINATED AMBER AND COWL VALVE OPEN LIGHT REMAINED ILLUMINATED BRIGHT BLUE WITH ENG ICE SWITCH IN THE ON POSITION. RAN ENGINE NR 1 OPS CHECKED ENG NR 1 COWL ANTI ICE VALVE VERIFIED FAULT REF MM 30 21 11. REPLACED ENG NR 1 ENGINE COWL TAI VALVE REF MM 30 21 11. OPS CHECKED ENG NR 1 TAI COWL VALVE OPS OK REF MM 30 21 11.