The Directorate General of Civil Aviation in its statement has asked the airlines not to refit the affected engines.
Eight aircraft operated by IndiGo, India's biggest low-cost carrier which is owned by InterGlobe Aviation, and 3 aircraft operated by its rival GoAir are affected by the order.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)
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