AAI has taken up development programme to spend around Rs. 25,000 crores in next 4-5 years for expansion and modification of existing terminals, new terminals, expansion or strengthening of existing runways, aprons, Airport Navigation Services (ANS), control towers, technical blocks etc. to meet the expected growth in aviation sector. It was revealed by General (Retd.) Dr. VK Singh, Minister of State, Civil Aviation, in Rajya Sabha.