What was found
SEA- STRONG PAINT/FUME SMELL IN COCKPIT ON DESCENT INTO SEATTLE. FLIGHT IDLE, CABIN ALTITUDE 4000 FEET, DIFFERENTIAL PRESSURE 4 PSI. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED NOSE BAY AREAS, NO DEFECTS NOTED. NO DEBRIS IN AIR CYCLE MACHINE AIR INLETS. PRESSURIZED AIRCRAFT AND OPERATED CABIN AIR CYCLE MACHINE TO 4 PSI AND COCKPIT AIR CYCLE MACHINE TO 6 PS, NO SMELL NOTED. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.