April 1973 - 26 October 1986) 103 series 6-car, later 8-car EMUs (June 1980 - 8 December 2005) 201 series 6-car EMUs (from 3 March 1986 - November 1996) 205-0 series 8-car EMUs (from December 1991 - October 2019) 205-5000 series 8-car EMUs (from 2002 - 19 October 2020) 165 and 169 series EMUs were used on Shinkansen Relay services and later Musashino rapid services until 2002. 115 series EMUs were used on Musashino services from 2002 until the services were downgraded to all-stations "Local" status in December 2010. The 205-0 series sets were built from new for the Musashino Line, entering service from 1 December 1991, and have six motored cars per eight-car set. These were the last 205 series sets to be built from new. The 205-5000 series sets were modified between 2002 and 2008 from displaced former Yamanote Line sets by adding new VVVF-controlled AC motors, and have four motored cars per eight-car set. Freight Locomotive types seen hauling freight trains include the Class EF64, Class EF65, Class EF66, Class EF81, Class EF200, Class EF210, Class EH200, Class EH500, Class DE10, and Class HD300. History The Musashino Line was initially envisioned as a "Tokyo Outer Loop Line" in a 1927 railway appropriations bill, but was not built for several decades due to World War II and its aftermath. Construction finally began in November 1965. In 1967, a train carrying jet fuel to Tachikawa Air Base in western Tokyo exploded while passing through Shinjuku Station. This disaster led to the banning of freight trains on railway lines in central Tokyo and sped the development of the Musashino Line as an alternative route. Because most of the line passed through sparsely populated areas, it was initially envisioned as a freight-only line. However, opposition from local residents, at the same time as the violent landowner battles plaguing Narita International Airport, led the railway authorities to agree to passenger service as well. The first section of the line between and opened on 1 April 1973. Train services were operated using 6-car 101-1000 series EMUs, which were modified specially for the line to comply with government regulations concerning fire resistance of trains operating through long tunnels, as the line included the between Shin-Kodaira and Shin-Akitsu stations, and the between Shin-Kodaira and Nishi-Kokubunji stations. Services operated at 15-minute intervals in the morning peak, and at 40-minute intervals during the daytime off-peak. The southern