Air travel control systems modernised at major airports

According to a PIB release, at a recent parliamentary session of the Rajya Sabha, Minister for Civil Aviation, Praful Patel informed that major work in modernisation of Air Traffic Control System (ATCs) has been undertaken at Delhi, Mumbai, Chennai, Kolkata, Hyderabad, Trivandrum, Mangalore, Bangalore, Nagpur, Ahmedabad, Varanasi and Guwahati.

The expenditure incurred by Airports Authority of India (AAI) on the modernisation of the Communication, Navigation and Surveillance and Air Traffic Management systems (CNS / ATM) during the last three years is as follows: (Rs. 5 Cr. = 1 Million)

• for the year 2005-06, Rs 118.20 crores;
• for the year 2006-07, Rs 66.15 crores;
• for the year 2007-08, Rs 200.71 crores.

After the installation of modern navigational/landing aids, increase in the handling capacity of airspace and airport, enhanced safety, reduction in delays in flight, saving of fuel and thus minimisation of adverse affect on environment, have been observed. Other benefits accrued include uninterrupted operation of flights through airports during the periods of poor visibility, monitoring of aircraft movements in avoiding over-flying over the restricted and prohibited areas and more effective and efficient monitoring of runways during periods of poor visibility.

Patel informed that Monopulse Secondary Surveillance Radars (MSSRs) have been installed at Delhi, Mumbai, Chennai, Kolkata, Trivandrum, Guwahati, Nagpur, Mangalore, Ahmedabad, Bangalore, Hyderabad, Behrampur and Varanasi, by the AAI, at a cost of Rs 229 crore.

MSSR provides position, distance, call sign and altitude of the aircraft and data link between controller and pilot. It also provides seamless surveillance over territorial airspace by filling the radar coverage gaps for smooth and efficient air-traffic flow.

New Delhi, and Mumbai will be installing a GBAS navigation system similar to the one proposed at Newark Liberty airport, by 2010.