MUMBAI: Budget carrier IndiGo and GoAir cancelled as many as 65 flights on Tuesday after the country’s aviation regulator Directorate General of Civil Aviation (DGCA) grounded its eight A320Neo planes with faulty Pratt & Whitney engines + , along with three such aircraft of GoAir. The Gurugram-based IndiGo cancelled 47 of its 1,000-odd flights per day, the Wadia Group-promoted GoAir said it had cancelled 18 flights. GoAir has cancelled 18 flights originating from over eight cities, the airline said in a statement to PTI. GoAir operates 230 flights per day. The flights that have been cancelled are…