As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AMBER TAI INDICATION ON NUMBER 1 ENG WHEN ENG ANTI ICE SWITCH O N. ALL OTHER INDIC NORMAL REMOVED AND REPLACED ENGINE COWL ANIT ICE VALVE IAW AMM 30-21-11 OP CHECK GOOD ROTABLE PARTS CHANGE WAS INDICATED - TT # 1893019 SN OFF 5709 VALVE, ANTI-ICE OFF 29-3021-9-0002 5709 ON 29-3021-9-0002 7299