The service is operated at 20-minute intervals between Munich Airport station and East Munich. Two out of three trains per hour continue from Neufahrn bei Freising to Freising, so that the headway between trains alternates between 20 and 40 minutes. It is operated using class 423 four-car electric multiple units, usually as two coupled sets. In the evenings and on Sundays they generally run as single sets.
The service runs over lines built at various times:
the underground section of the S-Bahn trunk line from the approaches to Munich Central Station to Munich East station, opened on 1 May 1971[6]
S-Bahn services commenced on 28 May 1972 as between Freising and Kreuzstraße. took over the section from Munich East to Kreuzstraße on 10 June 2001. Services to Munich Airport commenced on 29 November 1998.
Notes
^Eisenbahnatlas Deutschland (German railway atlas) (2009/2010 ed.). Schweers + Wall. 2009. pp. 107, 164–7. ISBN978-3-89494-139-0.