The Ministry of Civil Aviation has planned Rs 360 bn investment for developing greenfield airports under the Public-Private Partnership (PPP) model. The PPP airports at Delhi, Hyderabad and Bengaluru are undertaking major expansion projects of around Rs 300 bn by 2025. The government has accorded in-principle approval for developing 21 greenfield airports across India. There are five airports with table-top runways, including Calicut, Mangaluru, Shimla, Lengpui and Pakyong. There are 140 airports, heliports and water aerodromes in India, and 24 airports of the Airport Authority of India (AAI) are non-operational.
