As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 BLEED LOW TEMP EICAS MESSAGE DURING ICE PROTECTION TEST IN FLIGHT. MESSAGE WENT AWAY IN AUTO MODE. REMOVED AND REPLACED THE NR 1 BLEED THERMOSTAT AND THE NR 1 BLEED CONTROL SWITCH IAW AMM 36-11-06, AND 20-13-04. OPS CHECKED GOOD IAW 36-00-00. REMOVED AND REPLACED THE NR 1 ENGINE BLEED VALVE IAW AMM 36-11-05, LEAK AND OPS CHECKED GOOD.