As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) SMOKE IN COCKPIT DUE TO LT WINDOW HEATER. EMERGENCY DECLARED DUE TO DAMAGED INSULATION BLOCK, REPLACEMENT OF LT SIDE WINDOW AND CONTINUITY CHECK OF SUPPLY WIRES NECESSARY. TROUBLESHOOTING POINTS TO INTERNAL FAULT OF THE HEATER ELEMENT TERMINAL BLOCK AT WINDOW 'MPE4HC'. LT SIDE WINDOW REMOVED ACC. AMM 56-12-01-000-801. LT SIDE WINDOW IAW AMM 56-12-01-400-801 INSTALLED.