What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Aircraft was repositioning to engine run-up area from fixed base operator. While taxing and attempting to slow down prior to a turn by applying equal brake deflection on top of rudder pedals, the left brake failed, right brake engage and spun the aircraft to the right. The brakes were released to attempt to straighten the nose wheel but it kept turning to the right . The engine was shut down as the aircraft coasted to a stop but not before the wind milling prop stuck a taxiway marking light fixture.
As the FAA filed it
AIRCRAFT WAS REPOSITIONING TO ENGINE RUN-UP AREA FROM FIXED BASE OPERATOR. WHILE TAXING AND ATTEMPTING TO SLOW DOWN PRIOR TO A TURN BY APPLYING EQUAL BRAKE DEFLECTION ON TOP OF RUDDER PEDALS, THE LEFT BRAKE FAILED, RIGHT BRAKE ENGAGE AND SPUN THE AIRCRAFT TO THE RIGHT. THE BRAKES WERE RELEASED TO ATTEMPT TO STRAIGHTEN THE NOSE WHEEL BUT IT KEPT TURNING TO THE RIGHT . THE ENGINE WAS SHUT DOWN AS THE AIRCRAFT COASTED TO A STOP BUT NOT BEFORE THE WIND MILLING PROP STUCK A TAXIWAY MARKING LIGHT FIXTURE.