As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROLL PIN SEPARATED FROM THE ARM THAT IS A PART OF THE BRAKE VALVE ASSY. THE ROLL PIN ACTIVATES A MICROSWITCH THAT OPERATES THE PACKING BRAKE LIGHT. IF THE PIN SEPARATES FROM THE ARM, PARKING BRAKE INDICATOR LIGHT STAYS ILLUMINATED. SUBMITTER STATES THIS IS THE THIRD TIME THIS VALVE HAS BEEN REPLACED FOR THE SAME DISCREPANCY WITHIN EIGHT MONTHS.