As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ONE HOUR INTO FLIGHT LEFT PACK TEMP EICAS FOLLOWED BY PACK INOPERATIVE. LIGHT ON OVERHEAD PANEL BOTH EXTINGUISHED WITHIN 30 SECONDS WITHOUT ANY CREW ACTION. HOT METAL ODOR IN MID CABIN AT SAME TIME. THE LEFT PACK TEMP CONTROL VALVE WAS REPLACED. SYSTEM OPERATION IS NORMAL.