TL* THE CONTACT OWNS A 1999 FORD F-150. WHILE THE CONTACT'S DAUGHTER WAS DRIVING 70 MPH, THE VEHICLE MADE A LOUD NOISE AND BEGAN SPUTTERING. THE DRIVER NOTICED FLAMES UNDER THE HOOD. A PASSERBY EXTINGUISHED THE FIRE. THE FIRE DEPARTMENT WAS NOT CONTACTED. THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT A SPARK PLUG HAD BEEN BLOWN OUT OF THE CYLINDER HEAD, IGNITING A FIRE. THE MECHANIC ALSO NOTED THAT THE SPARK PLUG BOOT HAD MELTED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. A DEALER WAS NOT CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 160,000.