As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PILOT REPORTED PARK BRAKE APPLYING ITSELF. NOTICED ONCE ON TAKEOFF ONCE ON LANDING. CONFIRMED BY APPLYING SLIGHT PRESSURE TO PARK BRAKE SELECTOR TO THE OFF POSITION. UNIT REPLACED WITH SERVICEABLE UNIT, WHICH WAS SERVICED WITH NEW O-RINGS AND SYSTEM BLED GROUND CHECKED OK.