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Replace 16 Neo engines in 15 days, IndiGo told

Three cases that led pilots to switch off the snag-hit engines (called commanded inflight shutdown or IFSD) happened on consecutive days —October 24, 25 and 26. Since twin-engine aircraft can land safely on one engine, these three A320 new engine option (Neo) did so at their origin cities. In addition to these cases, another IndiGo Neo experienced high-engine vibration due to which it too had to return.

Alarmed at the sudden spurt of such cases, DGCA chief Arun Kumar asked his top technical officers to examine the issue threadbare over the Diwali weekend and then dispatched a six-member team to IndiGo’s Gurgaon office on Monday to “review maintenance and safety data”.

IndiGo has 250 planes in its fleet. Of them, 97 are Neos. Among the Neos, about 49 have got new and modified PW engines. The remaining 48 IndiGo Neos have older engines that are yet to be replaced by the ones modified to reduce their snag incidence.


The regulator found the problem is happening with PW’s unmodified engines that have flown for over 2,900 hours in climb phase. Unmodified engines that have flown for less than 2,900 hours are not yet showing this trouble.


Arun Kumar said: “About 16 Neos have unmodified (PW) engines that have done more than 2,900 hours on both wings. They will need to be fitted with one

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