SNCF Class BB 27300 the number carried on the locomotive is prefixed with the number 8, to denote the unit as belonging to the Île-de-France division of SNCF. The first locomotives entered service in 2006 on suburban trains from Paris Montparnasse railway station. Current deployment sees a total of 25 locomotives operating services from Paris-Montparnasse on trains to Dreux, Mantes-la-Jolie and Rambouillet. At Montparnasse they have displaced older SNCF Class BB 8500 and BB 25500 locomotives. A further 42 locomotives operate from Paris Saint-Lazare railway station on trains to Poissy, Mantes-la-Jolie, Pontoise, Gisors, and Ermont Eaubonne. At Saint-Lazare BB 8500 and BB 17000 locomotives
SNCF Class 141R ergonomic hitherto unknown to SNCF crews. Driving and firing controls were within reach while seated, with automatic coal feeding thanks to the mechanical stoker, and oil-firing was even easier. They were "banalisées" ("standardised"), that is, not assigned to a particular crew. On the 19 October 1975 the last 141 R in use with the SNCF, 141 R 1187 of Vénissieux depot, worked a special return working between Lyon and Veynes. Four locomotives of Narbonne depot were leased to the Hellenic State Railways from November 1973 to April 1974. Twelve 141.R locomotives have been preserved. Among them, in operating condition are: