CSRR 15 and 6516 at North Conway, NH by Otto Vondrak Via Flickr: In the yard at North Conway. CSRR 15 is former Maine Central, built in 1954, and was used on MOW trains and other light duty. Unit is for sale as of June 2009, and last operated in 2005. It was the first diesel to come to Conway Scenic. The 6516 was pondering its fate as it prepared to depart CSRR and start a new life on Pan Am Railways.