Some of the aged Ae 6/6 locomotives are back in service, mainly in the gravel train business from Bülach/Hüntwangen/Zweidlen. Former "Appenzell Inner Rhoden" # 11419, built in 1958, is pulling the loaded gravel train 67221 (18 cars, about 1440 tons) Zweidlen-Rothenburg over the 136 meter long Glatt viaduct between Zweidlen and Eglisau. This viaduct was mistakenly destroyed during World war II on November 9th 1944 by an american bomber squadron.
