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    Boeing pushes back on whistleblower’s allegations and details how airframes are put together

    YYC TimesBy YYC TimesApril 16, 2024No Comments6 Mins Read

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    FILE - Boeing employees walk the new Boeing 787-10 Dreamliner down towards the delivery ramp area at the company's facility after conducting its first test flight at Charleston International Airport, Friday, March 31, 2017, in North Charleston, S.C. A Senate subcommittee has opened an investigation into the safety of Boeing jetliners, intensifying safety concerns about the company's aircraft. The panel has summoned Boeing's CEO, Dave Calhoun, to a hearing next week where a company engineer, Sam Salehpour, is expected to detail safety concerns about the manufacture and assembly of Boeing's 787 Dreamliner.
    FILE – Boeing workers stroll the brand new Boeing 787-10 Dreamliner down in the direction of the supply ramp space on the firm’s facility after conducting its first take a look at flight at Charleston Worldwide Airport, Friday, March 31, 2017, in North Charleston, S.C. A Senate subcommittee has opened an investigation into the protection of Boeing jetliners, intensifying security considerations concerning the firm’s plane. The panel has summoned Boeing’s CEO, Dave Calhoun, to a listening to subsequent week the place an organization engineer, Sam Salehpour, is predicted to element security considerations concerning the manufacture and meeting of Boeing’s 787 Dreamliner. Photograph by Mic Smith /THE ASSOCIATED PRESS

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    Boeing is defending the integrity of the fuselages on two of its largest planes, which have come beneath criticism from a whistleblower who warns that panels on the surface of one of many planes might ultimately break aside throughout flight.

    Two Boeing engineering executives went into element Monday to explain how panels are fitted collectively, notably on the 787 Dreamliner. They instructed the 787’s carbon-composite pores and skin is sort of impervious to metallic fatigue that weakens standard aluminum fuselages.

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    Their feedback throughout a prolonged media briefing served as each a response to information stories final week concerning the whistleblower’s allegations and a preemptive strike earlier than he testifies to a congressional panel on Wednesday.

    The whistleblower, Boeing engineer Sam Salehpour, mentioned extreme drive was utilized to suit panels collectively on the 787 meeting line, elevating the danger of fatigue, or microscopic cracking within the materials that would trigger it break aside.

    The Boeing officers described how sections of a fuselage are introduced collectively, shims are added to fill gaps, holes are drilled and cleaned, and fasteners hooked up to use “pull-up drive” that 99% of the time leads to margins no larger than .005 inches (0.127 millimeters) aside — the width of a human hair, they mentioned. A spot drawback was found in 2019 between two panels, which led to design and meeting adjustments, they mentioned.

    Boeing carried out testing replicating 165,000 flights with no findings of fatigue within the composite construction, Steve Chisholm, Boeing’s vp of structural engineering, mentioned. The common 787 makes 600 flights a yr, he mentioned.

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    The corporate mentioned planes already in use are proving secure. Chisholm mentioned 671 Dreamliners have undergone the intensive inspections for 6-year-old planes and eight have undergone 12-year inspections with no proof of fatigue within the composite skins.

    Cracks have been discovered on metallic elements, together with a bit above the place the wings be a part of the fuselage, and Boeing issued inspection pointers for these elements, the officers mentioned.

    The 787 Dreamliner is a two-aisle airplane that has usually been used on worldwide flights since its debut in 2011. The composite materials makes the airplane lighter, contributing to raised gasoline effectivity.

    A collection of battery fires briefly grounded the planes. Deliveries of the plane have been stopped at instances due to questions on gaps between fuselage panels that had been wider than Boeing’s requirements allowed, the usage of unapproved titanium elements from a provider in Italy, and flaws in a stress bulkhead.

    The Federal Aviation Administration should examine and approve every 787 that rolls off the meeting line earlier than it may be flown to an airline buyer.

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    The whistleblower Salehpour claims that after he raised security considerations concerning the 787, Boeing transferred him to work on an older widebody airplane, the 777. He advised the Seattle Instances that he noticed staff leaping on fuselage panels to get them in alignment, which Boeing disputes.

    The New York Instances reported that the FAA is investigating Salehpour’s claims. The FAA, whereas not commenting particularly on Salehpour, mentioned it investigates all security stories.

    Boeing says it’s “absolutely assured” in each planes.

    Salehpour is the most recent in a line of Boeing whistleblowers to return ahead, usually alleging retaliation for elevating security considerations. The corporate mentioned it encourages workers to talk up about issues.

    Lisa Fahl, the vp of engineering for Boeing airplane packages, mentioned worker stories have “exploded” — with as many stories in January and February as had been filed in all of 2023 _ “which is what we wish.”

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