As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING, AIRCRAFT BRAKES WERE APPLIED AT SLOW SPEED, AIRCRAFT VEERED LEFT DUE TO LEFT BRAKE GRABBING AND NOT RELEASING. LEFT BRAKE RELEASED AFTER REPEATEDLY PUSHING THE PEDALS AND PULLING PARKING BRAKE LEVER. HAPPENED AGAIN ON RAMP OF FBO AT SLOW TAXI SPEED.