IndiGo and Go Airlines India Ltd. use the same type of engine made by Pratt & Whitney that’s susceptible to mid-flight shutdowns. Yet IndiGo, one of Airbus SE’s biggest customers, is the only one to encounter turbine failures this year, drawing heavy scrutiny from the aviation regulator.
The reason could be linked to how the budget airline flies. India’s Directorate General of Civil Aviation told IndiGo’s operator, InterGlobe Aviation Ltd., that its practice of revving A320neo jets at full thrust right after takeoff could wear down the engines, people familiar with the matter said. By contrast, Go Air — India’s fourth-largest carrier by market share — typically uses a so-called alt-climb approach that applies less thrust, the people said, asking not to be identified discussing a private matter.
