In a big boost to India's surveillance capability, the Indian Air Force (IAF) is likely to receive the first of the three Israeli Phalcon Airborne Warning and Control Systems (AWACS) in the second half of May this year, almost a year and a half behind schedule.

"Indian Air Force officials have been regularly checking the system and final details are being worked out which will enable the delivery of the system by second half of May," defence sources here said.