According to reports, budget carrier IndiGo has cancelled as many as 47 flights on Tuesday across its domestic network after the Directorate General of Civil Aviation cracked a whip. The country's aviation regulator grounded eight A320Neo planes of IndiGo with faulty Pratt & Whitney engines, along with three such aircraft of GoAir. The flights from Delhi, Mumbai, Chennai, Kolkata, Hyderabad, Bangalore, Patna, Srinagar, Bhubaneswar, Amritsar, Srinagar and Guwahati, among others have been cancelled.