production was set to ramp from seven cseries deliveries in 2016 to 30-35 aircraft in 2017 after pratt & whitney pw1000g supply and start issues are resolved. production could increase to 90-120 aircraft per year by 2020. the cseries delivery goal for 2017 was revised to 20-22, due to pratt & whitney delivery delays, but only 17 deliveries were completed in the year.