As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POWER BRAKE LOW PRESSURE AND ANTI-SKID INOP LIGHTS STAYED ON MUCH LONGER THAN USUAL UPON LANDING GEAR EXTENSION (APPROX 10 SECONDS). FOUND POWER BRAKE ACCUMULATOR PRECHARGE LOW. SERVICED POWER BRAKE ACCUMULATOR REF AMM 12-13-02. PERFORMED LEAK CHECK OF ACCUMULATOR PLUMBING WITH NO LEAKS NOTED. POWERED BRAKE SYSTEM. GROUND CHECKS NORMAL. MONITORED SYSTEM PRESSURE FOR 4.5 HOURS WITH NO DROP IN PRESSURE.