What was found
ETOPS SIGNIFICANT SYS - BTB - AFTER START, EICAS MESSAGE "PROBE HEAT" OVERHEAD CAPTS PITOT, LAOA, R AUX PITOT HEAT. MAINT FOUND L-17 AND L-18 AND K-14,15,16, 17 PULLED. THESE BREAKER WERE PULLED TO PERFORM MX IAW TASK CARD 767-3-HAL005. ALSO VERIFIED ALL OTHER BREAKERS IAW TASK CARD.