What was found
INFLIGHT DEFOG VALVE WAS STUCK IN WIDE OPEN POSITION. HEATER DUCT BLEW OUT AS A RESULT OF PRESSURE. REPLACED VENTILATION NOZZLE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
INFLIGHT DEFOG VALVE WAS STUCK IN WIDE OPEN POSITION. HEATER DUCT BLEW OUT AS A RESULT OF PRESSURE. REPLACED VENTILATION NOZZLE.