As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4131 - CREW REPORTED ON CLIMBOUT AT FL 160 BRAKE OVERHEAT WARNING MESSAGE ON EICAS ALONG WITH THE NR 4 BRAKE TEMP INDICATION ERRATIC. CREW ELECTED TO RETURN TO THE FIELD. CREW DECLARED AN EMERGENCY. AIRCRAFT LANDED AND TAXIED TO THE GATE SAFELY AND WITHOUT FURTHER INCIDENT. AIRCRAFT REMOVED FROM SERVICE. COMPLIED WITH ETN 32-016, REMOVED AND REPLACED NR 4 BRAKE ASSEMBLY IAW AE MTX WC 32-007. TAXI TEST SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (A)