InterGlobe Aviation-run IndiGo airlines slipped for the third consecutive day, down 5 per cent on the BSE on Tuesday, after industry regulator Directorate General of Civil Aviation (DGCA) instructed the airline to change engines on 16 of its Airbus A320neos, following three instances of in-flight engine shut-downs. The regulator has warned the airline the aircraft would have to be grounded if the changes are not completed in the next 15 days.
"We have decided that all aircraft with unmodified low-pressure turbine (LPT) engines, which have clocked more than 2,900 hours, have to be fitted with one modified LPT engine in