Pic for representation/AFP

Budget carriers IndiGo and GoAir cancelled as many as 65 flights on Tuesday after the country's aviation regulator DGCA grounded 11 of their A320Neo planes with faulty Pratt & Whitney engines, causing severe inconvenience to hundreds of flyers. IndiGo cancelled 47 of its 1,000-odd flights per day, the Wadia Group-promoted GoAir said it had cancelled 18 flights.