With the arrival of the R142As on the 6, the "Main Line" R36s were transferred over to the 7. While the Redbirds on the IRT Main Line were retired starting in early 2001, the service was still provided by R33S cars and R36s. In January 2002, a set of R62As arrived from the IRT mainline. As more R142s and R142As were delivered, R62As were gradually transferred from the and to the , in turn replacing the R33S cars and R36s. The last "Main Line" R36 pair, 9542–9543, ran on the 7, until its retirement in August 2003. The last train of "World's Fair" R36s, consisting of pairs 9564–9565, 9616–9617, 9582–9583, 9584–9585, and 9586–9587 finally ran along the on November 3, 2003, with R33S car 9309, marking not only the end of the Redbird cars, but also the end of non-stainless steel cars on the subway.