Air safety officials in Europe clamped down on flights by planes powered by affected Pratt & Whitney engines, citing "several occurrences of engine in-flight shutdown", according to the Wall Street Journal.
"And, of course, we successfully implemented the engine improvements that we promised to customers in 2017", he said. In India, more than 90 per cent of aircraft powered PW1100G-JM engines remain in service. In order to cascade info and mitigating measures in a timely manner, Airbus and EASA agreed to issue an Emergency Airworthiness Directive (EAD) to ensure continued safe operation of the PW A320neo fleet. While the GTF powered Airbus A320neo and the Bombardier CSeries have entered service, the Embraer Ejet E2 family, Mitsubishi MRJ family, the Russian Irkut MC-21 and the Chinese COMAC C919 are under flight testing. The disclosure of new problems with the Pratt engines late last week marks a blow for the A320neo, Airbus's best-selling plane.
Pratt implemented an engineering change in mid-2017 that was meant to improve the durability of the seal, with the new engines fitted to aircraft from December 2017, but the modified engines "did not perform as anticipated", the company said.
Bobbi went on to say, however, that Pratt's competitors are having major problems with their newest engines as well. Customers can choose between the Pratt & Whitney model and a type built by the CFM joint venture between General Electric Co. and France's Safran SA. "Pratt & Whitney will be in a position to provide greater detail around the remediation plan and impact, if any, on its 2018 delivery plan, once the regulatory authorities address its proposed solution", Pratt & Whitney said.More news: Possible changes coming to SNAP
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While investigation is ongoing to determine the root cause, preliminary findings indicate that the affected engines, which have high pressure compressor aft hub modification embodied from engine serial number (ESN) P770450, are more susceptible to IFSD.
In a statement issued on Saturday, IndiGo confirmed that there are some issues with the engine of the said aircraft and keeping the safety as top priority, it has decided not to fly these three aircrafts. Last time also, despite IndiGo facing 69 Neo engine failures between March 2016 and Sept 2017 and GoAir too reporting in-flight disruptions on account of the engine woes, the DGCA did not take any tough stand.
Neither the aircraft manufacturer nor the agency disclosed what airlines are operating aircraft with affected engines.