What was found
FLT 47 - APPROX 1 HOUR INTO FLIGHT, SMOKE AND ODOR WAS DETECTED IN COCKPIT. ALL WINDOW HEAT TURNED OFF, AIRCRAFT DESCENDED TO 10,000 FT AND RETURNED TO MIA WITHOUT INCIDENT. FOUND CORROSION ATL L-1 HEAT SENSOR. HIGH RESISTANCE L-1 WINDOW. WINDOW ASSY REPLACED. AIRCRAFT RETURNED TO SERVICE. (M)