November 2021 - Construction underway; April 2021 - Minister of Transport and Infrastructure attended the first rail welding ceremony of the project; September 2020 - Expected completion in 2021; August 2015 - Contract awarded to Gulermak and YSE; Project is a part of Pendik - Tavsantepe - Sabiha Gokcen Airport Metro line; Project cost - TRY2.369bn