As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE RECEIVED AN EMER BRK LOW PRESSURE CAS. PRESSURE WAS APPROXIMATLEY 150PSI AND CONTINUED TO DROP. SOMETIME BETWEEN TOUCHDOWN AND ENGINE SHUTDOWN PRESSURE CAME BACK UP TO 2900 THEN DROPPED TO 2400PSI WITHIN 10 MINUTES. TWO MORNINGS IN A ROW AIRCRAFT HAD EMER BRK LOW PRESSURE CAS PRIOR TO FIRST FLIGHT. CORRECTIVE ACTION: REPLACED THERMAL RELIEF VALVE. OPS CHECK GOOD. IAW AMM 32-43-08