As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT THROUGH 12000 FT TO 8000 FT LT ENGINE ANTI-ICE TURNED AMBER TAI INDICATED ON ENGINE DISPLAY. COWL VALVE OPEN ON LT SIDE LIGHT WAS BLUE. AMBER TAI LIGHT WENT OUT AND INDICATED GREEN BELOW 8000 FT. NORMAL INDICATION ON LT TAI LIGHT AFTER 8000 FT. ACFT GROUNDED. REPLACED NR 1 ENG TAI VALVE REF AMM 30-21-11. ACCOMPLISHED OPS TEST, NO FAULTS FOUND, REF AMM 30-21-00.