As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT GEAR EXTENSION BRK INBD INOP ON EICAS, DID GO AROUND AND RETRACTED GEAR MESSAGE WENT AWAY AT GEAR EXTENSION DURING SECOND APPROACH MESSAGE DID NOT RETURN. DELARED AN EMERGENCY. C/A-FOUND BRAKE INBD SOV FAIL ON CMC MESSAGE. T/S REF FIM TASK 32-41-00-810-809. RAR BRAKE SHUTOFF VALVE #2 IAW AMM 32-41-05. OPS AND LEAK CHECK GOOD. FOUND #4 BRAKE SHUTTLE VALVE O-RNG BETWEEN OUTBOARD QUICK DISCONNECT AND HOUSING TO BE LEAKING. REMOVED AND REPLACED O-RING IAW CMM 32-49-12. OPS CHECK GOOD. NO LEAK NOTED AT THIS TIME.