What was found
(CAN) UNABLE TO RELEASE PARKING BRAKE, CREW HAD TO CYCLE BRAKES TO RELEASE PARKING BRAKE. DUAL POWER BRAKE VALVE CONTROL CABLE FRAYED AT PULLEY UNDER PILOT'S SEAT. REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) UNABLE TO RELEASE PARKING BRAKE, CREW HAD TO CYCLE BRAKES TO RELEASE PARKING BRAKE. DUAL POWER BRAKE VALVE CONTROL CABLE FRAYED AT PULLEY UNDER PILOT'S SEAT. REPLACED.