evidence: - Ude Desh Ka Aam Naagrik (UDAN) was launched as a Regional Connectivity Scheme (RCS) under the Ministry of Civil Aviation in 2016. [...] - UDAN 1.0 - Under this phase, 5 airlines companies were awarded 128 flight routes to 70 airports (including 36 newly made operational airports). - UDAN 2.0 - In 2018, the Ministry of Civil Aviation announced 73 underserved and unserved airports.