As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NBR 9 BRAKE TEMP 931 PER CREW DEBRIEF #9 BRAKE TEMP WAS FLUCTUATING BETWEEN BETWEEN 900 AND 500 DEGREES CELSIUS ON TOW IN FROM RUNWAY. ALSO FIRE DEPARTMENT CHECK ALL BRAKES WITH HEAT GUN. ALL BRAKE TEMP WERE NORMAL. SUSPECT BAD SENSOR ON #9 BRAKE. REMOVED AND REPLACED #9 BRAKE TEMP. SENSOR REF. MD11 AMM: 32-46-01-4.