As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH INTO DAY RECEIVED PARKING BRAKE SOV AND 1/B ANTI-SKID MSG WHEN GEAR WAS LOWERED. EMERGENCY DECLARED, ABORTED APPROACH. ACFT LANDED SAFELY ON 2ND APPROACH. FOUND NR 3 HYD BRAKE ACCUMULATOR (I/B BRAKES) TO HAVE ZERO PRESS. SERVICED ACCUMULATOR. NO FURTHER DEFECTS NOTED.