MY 2003 MBII & MBIV SCHOOL BUSES BUILT ON FORD E-350 & E-450, GM 3500 CHASSIS, AND MANUFACTURED BETWEEN AUGUST 25 AND SEPTEMBER 17, 2003. THESE BUSES ARE EQUIPPED WITH BEAM’S INDUSTRIES SEAT BELTS. THE METAL FRAME OF THE SEAT BELT BUCKLE MAY FRACTURE DUE TO POSSIBLE EMBRITTLEMENT OF THE STEEL, RESULTING IN A POTENTIAL RELEASE OF THE ENGAGED TONGUE DURING USE. THESE SEAT BELT ASSEMBLIES DO NOT COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 209, “SEAT BELT ASSEMBLIES.”