What was found
DURING DESCENT IN ICING CONDITIONS AT 4000 FT, CAUTION MSG WG & STAB ANTI-ICE FAIL ON EICAS, FOLLOWED BY WARNING MSG ICE COND, ANTI-ICE INOPERATIVE. PERFORMED OPERATIONS CHECK OF AIR BLEED SYS & WING THERMAL ANTI-ICING SYS. OPERATIONS CHECKED GOOD IAW AMM 36-00-00 & 30-11-15-700-801-A. NO CMC MSGS NO DEFECTS NOTED.