As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT, FLIGHT CREW RECEIVED LT & RT BRAKE FAULT EICAS MESSAGES. PHX STATION HAS ALSO BEEN BRIEFED OF THE INBOUND DISCREPANCY. THE CREW RAN THE ASSOCIATED QRH AND DECLARED AN EMERGENCY INTO PHX. ONCE THE CREW LOWERED THE LANDING GEAR THE MESSAGE WENT AWAY, AND THERE WERE NO ISSUES WITH THE LANDING. BRK RT AND LT FAULT MSG IN FLT. R&R MAIN BRAKE CONTROL MODULE IAW AMM 32-41-07 ON WO 2319577, MSG CLEARED CHK GOOD OK FOR SERVICE