The Directorate General of Civil Aviation have demanded immediate grounding of all 11 Airbus A-320 New engine option (Neo) aircraft that are equipped with a faulty kind of Pratt & Whitney (PW) engines.
DGCA said it has not got a "firm commitment" from the U.S. engine manufacturer on addressing fresh safety concerns, which forced it to ground the fleet. "DGCA will continue to be in touch with the stakeholders and review the situation in due course as and when the issue is addressed by EASA and P&W", DGCA said in a statement issued to the media today.
However, in a late evening statement, IndiGo said it will have to ground only six aircraft. It comes after three in-service shutdowns of aircraft with one PW1100 engine featuring the seal, two of which occurred in the past week, according to the DGCA.
The European Aviation Safety Agency has ruled that operations with one defective engine should be permitted provided affected planes don't undertake extended flights over water, where they're more distant from diversionary airports in the event of an emergency.
The glitch with the so called knife-edge compressor seal is the latest in a series of expensive problems for Pratt in its development of the geared turbofan engine model.
With this, all the A320neo aircraft with PW1100 engines beyond serial number 450 have been taken off operation in India.
In a statement, P&W said, it is working closely with customers to minimise disruption. The corrective action has been approved and we have already begun to deliver production engines with the upgraded configuration. Out of them, 32 are with IndiGo and 13 are with GoAir. Upon implementation of the directive, IndiGo shall have a total of nine A320neo aircraft on ground. The affected passengers would be accommodated on other flights on our network.
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