used the findings as part of a full-scale investigation. If the findings found any kind of manufacturers defect, a safety recall of the vehicles involved would be ordered by NHTSA. As Carpenter was no longer in existence, that procedure was impossible, as there would be no one for NHTSA to hold accountable for the design problem. In June 2003, NHTSA introduced several advisories regarding Carpenter buses. As NHTSA could not offer its own recall due to the lack of a manufacturer and remained concerned about the problem, operators were recommended to inspect their own buses for cracked and broken welds in the roof structure. In its 2003 advisories, if a Carpenter bus was found with cracked or broken roof welds, NHTSA recommended replacement of the bus; if not practical, repair of the problem and restriction of the bus to low-speed routes to minimize the chance of rollover. To avoid resale of affected vehicles to the public, NHTSA advised that the title of Carpenter buses removed from service to be branded as "scrap". Products Carpenter produced a product lineup of both small and full-size buses. Like other school bus manufacturers, the company also produced commercial, shuttle, and transit bus derivatives of their school bus designs. The Carpenter Cadet, introduced in 1969, was one of the first Type B school buses; during the Crown by Carpenter era, a modified version of the Cadet was marketed as a delivery van. With the exception of "Classic", its Type C conventional and "Coach", its Type D rear-engine transit style (influenced by Crown Coach), most Carpenter school buses derived their model names from themes in education (Classmate, Cadet, Counselor, Chancellor) while many transit-style Carpenters derived their model names from common team names (Corsair, Cavalier). Survivors The Smithsonian Institution's National Museum of American History in Washington, DC has a thirty-six passenger school bus built by Carpenter Body Works in 1936 on a chassis made by Dodge in 1939. The bus carried students to the grade school in Martinsburg, Indiana from 1940 to 1946, and was owned and driven by Russell Bishop during that period. It was later used as a traveling grocery store until 1962. The bus has a streamlined steel body painted double-deep or "Omaha" orange with black trim. It was restored by Carpenter in the early 1980s under the supervision of Ollie Eager, who was Carpenter's plant manager in 1936, and John Foddrill, who worked