As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MAX POWER ASSURANCE RUN, PARKING BRAKE FAILS TO SECURE A/C EPR IS 1.4 AND ABOVE. MLG BRAKES SAME AT POWER SETTING 1.6 AND ABOVE. PERFORMED PARKING T/S+RIG CHECK IAW M/M 32-44-0. OPS CHECK GOOD. PERFORMED HYD BRAKE SYS T/S IAW 32-41-00. FOUND RT MLG BRAKE METERING VALVE OUT OF ADJ. BLEEDING TO RETURN SIDE UNABLE TO ADJ. REMOVED AND REPLACED BRAKE METERING VALVE.