evidence: UDAN Scheme is a regional airport development and Regional Connectivity Scheme (RCS) of GoI, launched in 2017. Click to download UDAN Scheme UPSC pdf, here. UDAN Scheme (Ude Desh ka Aam Naagrik) is a regional airport development and Regional Connectivity Scheme (RCS) of the Union Government of India which aims to provide connectivity to un-served and under-served airports of the country through the revival of existing airstrips and airports. From its inception UDAN Scheme has been transformed to 5 times/phases.