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Pratt & Whitney Blames Seal As Source Of Latest Jet Engine Troubles

Pratt & Whitney Blames Seal As Source Of Latest Jet Engine Troubles

The European Aviation Safety Agency, or EASA, on Friday issued an alert, known as an airworthiness directive, instructing operators of some of the Pratt engines to stop using the planes until it can be determined why some of the Pratt engines have experienced in-flight shutdowns.

"This issue is isolated to a limited subpopulation of engines", Pratt said, but did not say how many engines the "subpopulation" includes. "We are working with the engine manufacturer to replace the affected engines and to understand the longer-term implications of this situation".

The European manufacturer has been forced to suspend deliveries of A320neos with Pratt engines, according to IndiGo, the Indian low-priced airline that's the plane's biggest customer.

X This marks the latest setback for United Tech's Pratt & Whitney division and its Geared Turbofan (GTF) engines. United Technologies said Monday that approximately 55 engines delivered to the Airbus final assembly line awaiting installation on customer aircraft were also affected. The company is also working to assess an overall industrial and delivery plan to minimise customer disruption. It put the European planemaker on the map three decades ago, allowing the company to go from a speck in Boeing Co.'s rear-view mirror to powerful equal in what has become a de-facto duopoly in the global civil-aircraft market. The rest of the fleet is safe to fly as per guidelines issued by DGCA and EASA, " it said. Fellow Dow stock General Electric (GE), which makes the rival Leap engine, climbed 3.4%, though the Leap has run into its own production problems.

The early glitches at Pratt led many customers to wait on the sidelines: The competing CFM engine outsold the GTF on the A320neo by a 10-to-1 margin in early 2017.

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Pratt & Whitney, in coordination with Airbus, will present to regulatory authorities this week a proposed mitigation plan for the modified configuration, it said.

A statement from IndiGo on Saturday said the precautionary measure of grounding the three aircraft "resulted in cancellations of some of our flights".

If one engine fails, a twin engine aircraft can safely land with the other operative engine.

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.


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