Chennai is among the four flight information centres in the country besides Mumbai, Delhi and Kolkata, and the Chennai ATC has Hyderabad, Mangaluru, Thiruvananthapuram and Bangalore under its control. Besides the two radars in Chennai, radar systems in Mangaluru, Bangalore, Bangalore HAL, Shamshabad (Hyderabad), Bellary and Thiruvananthapuram are included in the new system. With the advanced integrated radar technology, ATC in Chennai now has the entire South Indian region on its radar screens, mainly co-ordinating flight movements above 26,000 to 46,000 ft.