What was found
CREW TURNED ON HEATED AND SMOKE IMMEDIATELY FILLED COCKPIT AND PASSENGER COMPARTMENT. CREW TURNED OFF HEATER AND RETURNED TO BASE. MX R & R CABIN VENT BLOWER.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CREW TURNED ON HEATED AND SMOKE IMMEDIATELY FILLED COCKPIT AND PASSENGER COMPARTMENT. CREW TURNED OFF HEATER AND RETURNED TO BASE. MX R & R CABIN VENT BLOWER.