The 416 cars of the LIRR's M9/M9A order is split into four parts. In July 2014, the delivery schedule was as follows: 92 base order cars (to be completed by April 2018) and 88 option 1 cars (to be completed by November 2018) to replace the M3 fleet as well as 76 option order cars (to be completed by August 2020) and 160 M9A cars (to be completed by October 2021) to be used for East Side Access service increases. 14 pilot cars were to be delivered September 2016 for testing, with the production cars being delivered at a rate of 12 cars per month. The balance of 188 cars for Metro-North was expected to begin delivery in December 2018 and be completed February 2020.
