As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD TO BUF - AFTER ROTATION THE CREW RECEIVED A BRAKE OVERHEAT MESSAGE ON EICAS. THE LEFT OUTBOARD BRAKE WAS INDICATING FULL HOT. THE GEAR WAS NOT RETRACTED AND THE AIRCRAFT RETURNED TO IAD AND LANDED WITHOUT INCIDENT AT WHICH TIME THE TEMPERATURE INDICATION FOR THE LEFT OUTBOARD BRAKE RETURNED TO NORMAL. MAINTENANCE INSPECTED THE BRAKE AND THERE WERE NO DEFECTS FOUND WITH THE BRAKE SO THE INDICATION WAS PLACED ON MEL.