The aviation regulator on Monday barred the country’s largest carrier, IndiGo, from operating Airbus A320 and 321 Neo aircraft having turbine blades built with titanium, which is prone to damage leading to mid-air engine shut down. The airline will have to replace such aircraft with those having sturdier engine turbine blades built with nickel-chromium alloy, according to a directive issued by the Directorate General of Civil Aviation (DGCA).
People in the know said the move would impact around 110 engines, virtually putting a spanner on the expansion plans of IndiGo — counted among the fastest growing airlines in the world.

)