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Boeing Resumes 777-9 Examine Flights After Two Months Pause

The 777X has returned to the skies following factors with the GE9X engine.

  • 787-8 Dreamliner



    Date Primarily based:

    Dave Calhoun

    Headquarters Location:
    Chicago, USA

    Key Product Strains:
    Boeing 737, Boeing 747, Boeing 757, Boeing 767, Boeing 777, Boeing 787

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The 777X has been taken off for the first time in two months after Boeing and GE labored on factors in regards to the GE9X engine reported remaining month. The N779XW has been flying since December seventeenth and has completed three days of testing from its base in Seattle. Let’s uncover out further.

A return to the skies

First observed by FlightGlobal, the examine program for the 777-9 has formally resumed. The first flight occurred on December seventeenth, with N779XW taking off from Boeing Space (BFI) in Seattle and spending virtually 1 hour and 40 minutes over Washington and Montana sooner than returning to BFI. Since then, the plane has been busy, flying as soon as extra on December nineteenth after which shifting to Spokane Airport (GEG) on the twenty first for extra assessments.

Screenshot 2022-12-22 at 10.19.35


In an announcement to FlightGlobal, Boeing said,

“We have resumed airplane testing following our full safety course of and acceptable mitigations whereas our suppliers and technical teams proceed their work. We’re supporting GE Aerospace as they proceed to judge a modern GE9X engine topic.”

In the intervening time, the alternative three examine 777Xs have not been reactivated, with the ultimate one flying in November 2021 and the latest in August. So what went mistaken with this method?

Temperature sensor triggered

In late November, Emirates CEO Tim Clark revealed that 777-9 flight assessments had been halted on account of engine factors, info later confirmed by GE as properly. This was one different blow to the widebody, which has already been pushed once more to at least 2025 sooner than making a purchaser look.

Since then, GE has gone into depth about what went mistaken with one among many engines, saying,

“We had a discovering all through a borescope inspection of a flight-test engine and decided with Boeing to remove the engine and ship it to our examine facility in Peebles, Ohio for engineering examine runs. All through these runs, a temperature alert was observed and the operators shut the engine down often.”


GE well-known that the problem occurred on one among its longest-used engines, carrying 2,600 flight cycles and over 1,700 hours of run time. Nonetheless, any engine anomaly must be examined rigorously and ironed out sooner than the plane can return to the skies, receiving rather a lot a lot much less regulatory approval for industrial operations. Whereas it seems the problem hasn’t been solved merely however, progress has been made to allow examine flights to resume as quickly as further.

Could the availability date slip?

One vocal critic of Boeing in newest months has been one among its largest prospects, Emirates. CEO Tim Clark has been outspoken about delays to the 777X, which has pressured the service to keep up getting older 777s and A380s throughout the fleet previous the anticipated various. Now, Clark fears that Boeing’s timeline of a first-quarter 2025 provide might presumably be slipping away as soon as extra.

In November, he said,

“The July 2025 provide date we estimate is one factor I said, not Boeing. They said they wished to ship by the tip of 2024 or first quarter of 2025. I said judging by their effectivity presently, we make that July 2025. And Boeing Enterprise CEO Stan Deal agreed.”

Whereas that’s the remaining consequence anyone is hoping for, the FAA’s elevated scrutiny of the 777X approval course of implies that delays are very seemingly. For now, the journey of the 777-9 continues, no matter some tempo bumps.

What do you consider the 777X’s future? Inform us throughout the suggestions.

Provide: FlightGlobal


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