What was found
IN CRUISE CREW REPORTED SMOKE FILLED THE COCKPIT WITH A BURNING ODOR WHEN THE HEAT VALVE WAS OPENED. SMOKE CLEARED WHEN THE VALVE WAS CLOSED AND THE DUMP PARTIALLY OPENED. MAINTENANCE WAS UNABLE TO DUPLICATE THE DISCREPANCY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
IN CRUISE CREW REPORTED SMOKE FILLED THE COCKPIT WITH A BURNING ODOR WHEN THE HEAT VALVE WAS OPENED. SMOKE CLEARED WHEN THE VALVE WAS CLOSED AND THE DUMP PARTIALLY OPENED. MAINTENANCE WAS UNABLE TO DUPLICATE THE DISCREPANCY.