IndiGo has grounded another Airbus A320 neo aircraft due to Pratt and Whitney (P&W) engine problem, sources said Tuesday.
The aircraft was grounded on Monday afternoon after it operated from Nagpur to New Delhi. The sources said oil chips were detected in the engine, a problem responsible for grounding other IndiGo neo aircraft earlier as well.
Confirming the snag, the airline in a statement said "post normal completion of a flight, an IndiGo aircraft was proactively grounded for a routine engine replacement yesterday. There was no impact on our flight operations".
IndiGo and GoAir, both budget carriers, have been grappling with P&W engine problems for several months.
There are 60 A320 neos with P&W engines - 41 with IndiGo and 19 with GoAir.
With the incidents of grounding happening with an alarming regularity, Civil Aviation Minster Suresh Prabhu last month sought a detailed report from avaition regulator DGCA on the issue.
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Earlier in August, IndiGo grounded a brand new Airbus A320 neo plane, which had flown less then 50 hours after it was delivered to the airline on July 31 this year.
On September 1, a Pune-bound Airbus A320 neo plane of GoAir from Bengaluru had to return after the engine reportedly failed midair.