As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ROLL PIN SEPARATED FROM ARM AND IS PART OF THE VALVE ASSY. THE ROLL PIN ACTUATES A MICROSWITCH THAT OPERATES THE PARKING BRAKE LIGHT. IF PIN SEPARATES FROM THE ARM, THE PARKING BRAKE INDICATION LIGHT STAYS ILLUMINATED. SUBMITTER STATED THIS IS THE 4TH TIME THIS VALVE HAS BEEN REPLACED FOR THE SAME DISCREPANCY WITHIN 12 MONTHS.