Aviation IndiGo's Jaipur-bound flight grounded after 'high vibration' in P&W engine Updated : January 22, 2019 06:41 AM IST The flight 6E-451, which was heading to Jaipur, returned to Lucknow as a precautionary measure. It is currently being inspected by IndiGo's technical team. Pratt and Whitney (P&W) engine woes have forced both IndiGo and its smaller rival GoAir to ground some of the A320neos. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.