PATNA, May 26 -- Aviation regulator, the directorate general of civil aviation (DGCA), has given all requisite clearances to operationalise the new terminal building of the Jayprakash Narayan International (JPNI) airport, ahead of Prime Minister Narendra Modi's two-day visit to Bihar on May 29, said officials on Sunday. PM Modi will inaugurate the Patna airport's new integrated terminal building, built at a cost of Rs.1,200 crore (approx), and lay the foundation stone for a new civil enclave at Patna's Bihta airport, approx 35 kms from the existing airport, during a simple programme between 5.45pm and 6pm, after he arrives from Hasimara in West Bengal by a special plane at 5.30pm on May 29, said officials. The air operations will, however, commence from the new terminal building by June 5. A battery of senior officers from the Airports Authority of India (AAI) headquarters in New Delhi and its regional headquarters in Kolkata will be camping in Patna from Monday. The DGCA, believed to be slow and fastidious in according its nod due to safety concerns, gave three commissioning level clearances in a day on May 23. The aviation regulator last Friday approved the commissioning of the lone passenger boarding bridge (PBB), also known as aerobridge. Of the total five aerobridges approved, only one has been constructed initially. The remaining four, likely to be constructed over the next six months, will come up after the existing old terminal building is demolished when the entire air operation shifts to the new terminal building in the first week of June, said a person familiar with the matter. The DGCA also gave go ahead to commissioning of a part of the ground service equipment (GSE) area, where passengers wait either before boarding or alighting from an aircraft and the cargo is kept before loading or unloading from an aircraft, as part of the 'Apron phase 3' of the airport terminal building redevelopment project, said another person aware of the matter. Besides, the regulator also gave nod to the commissioning of the Delta taxi track, the path linking the apron to the runway. The Delta taxi track has been constructed in addition to the existing Alpha, Beta and Charlie parallel taxi tracks. Prior to clearance by the DGCA, the Bureau of Civil Aviation Security (BCAS) had on May 21 given the formal security clearance of the terminal building, said the second person quoted above. Patna airport's new integrated terminal building has a built- up area of 65,155 sqm against the existing 11,130 sqm, which is handling nearly three times the traffic given its capacity. It will cater to 3,000 passengers during peak hours, boosting the airport's capacity from 30 lakh (3 million) to 1 crore (10 million) passengers annually. It will have six additional aircraft parking bays, increasing their number to 11, and facilitate parking nine Airbus A320 and two ATR aircraft. The new terminal has 64 check-in counters, nine automatic tray retrieval system (ATRS) at security checkpoints in phase I. The terminal building has two levels - the ground floor dedicated to arrival and elevated first floor for departure. It has a corridor to the multilevel car parking with capacity to accommodate 750 cars, along with a commercial floor....