New Delhi, Dec 1 : Amid allegations that its aircraft carrying Mamata Banerjee was made to hover over Kolkata airport putting at risk passengers’ safety, IndiGo today said the plane was delayed due to congestion before making a normal landing yesterday and had adequate fuel. In a detailed statement, IndiGo said the flight 6E 342 with 174 passengers onboard made a “normal landing” at Kolkata airport and that its captain did not declare a fuel priority or an emergency, though there was some misunderstanding between the Air Traffic Controller and the pilot. A political row has erupted over Banerjee’s IndiGo flight from Patna to Kolkata being made to wait despite the plane reportedly low on fuel with TMC members raising the issue in Parliament today. Also Read - 'Will Benefit Students, People Travelling Abroad': Mamata Writes to PM Modi For Expediting WHO Nod to Covaxin

The party has demanded a probe to find out if there was any conspiracy against the West Bengal Chief Minister. IndiGo, in the statement, said the fuel on arrival was more than the minimum diversion fuel and there has been no violation of regulatory requirements. “The flight was kept on hold for landing due to air traffic congestion at Kolkata. The pilot operating 6E 342 had advised the ATC that he has eight minutes of extra holding fuel over Kolkata (destination) before commencing diversion to the planned alternate. Also Read - TMC's Nusrat Jahan 'Shamed Indian Culture', Says BJP Bengal President Dilip Ghosh

“However, this information was misunderstood by the Air Traffic Controller who assumed that the aircraft had only eight minutes of total fuel left,” it said. According to IndiGo, the misinterpretation of information by ATC controller, led the ATC to instruct fire engines and ambulances to be stationed at the airport. “We would like to clarify – IndiGo captain at no stage declared a fuel priority or an emergency. Subsequently, the airplane made a normal landing at Kolkata airport at 840 PM (delayed by an hour due to congestion). Also Read - Alapan Bandyopadhyay Competent Person, Centre Victimising Him, Says Mamata Banerjee

“The fuel on arrival was more than the minimum diversion fuel. There has been no violation or breech of any regulatory requirement in the above mentioned scenario,” it said. The government today informed Parliament that aviation regulator DGCA has ordered an inquiry into as many as three flights, including the one carrying Banerjee, reporting low fuel at the same time, after TMC and other opposition parties alleged conspiracy and threat to her life.