As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE FROM PIT, AN EMERGENCY PARKING BRAKE ACCUMULATOR LOW PRESSURE WARNING OCCURED. THE AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY PARKING BRAKE VALVE, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-43-02. OPERATION AND LEAK CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.