SNCF Class BB 10003 locomotive was used as a test machine for operations of the TGV-TMST on 750 V and 3000 V. In 1998 the locomotive was converted back to a non-experimental class - as SNCF BB 15007. (SNCF Class BB 15000) The results were not as good as synchronous motor technology; it was not until the introduction of GTO transistor technology that series production of an asynchronous induction motored locomotive began in France, as the "Eurostar" TGV (1992), and later the BB 36000 "Astride" (1996). SNCF Class BB 10003 The locomotive SNCF BB 10003 was an experimental prototype locomotive converted from a SNCF
SNCF Class 241P boxes. The class also suffered from leaking boiler tubes after passing over points, which necessitated structural reinforcement. The class was withdrawn progressively from service from 1965 for 241.P.1 to 1973 for 241.P.16. Their last regular work, on the Le Mans to Nantes route, ended in early 1970. The class was nicknamed the "grosses P" to distinguish them from the 141.P Class, which were called the "petites P". Four 241.Ps have been preserved: SNCF Class 241P The SNCF 241.P is a 4-8-2 'Mountain' type express passenger steam locomotive that ran on the "Société Nationale des Chemins de fer Français", (French National