B787 - General Discussion | a380.boards.net

kevin5345179 delivered! a340 Posts: 2,498	B787 - General Discussion Aug 28, 2020 4:57:28 GMT 1 addasih and bmw801 like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by kevin5345179 on Aug 28, 2020 4:57:28 GMT 1

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B787 - General Discussion Sept 7, 2020 7:59:35 GMT 1 bmw801 likes this

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Post by kevin5345179 on Sept 7, 2020 7:59:35 GMT 1

The manufacturer declines to say how many of the 980 787s built so far have one of the two defects. The source with knowledge of the issue confirms that “many” airframes are affected, while a second industry source says the figure is “several hundred.” Boeing acknowledges there are two separate issues but declines to discuss their scope beyond acknowledging that eight aircraft have both.

aviationweek.com/air-transport/safety-ops-regulation/new-787-problems-spotlight-boeings-quality-issues

marlibu delivered! Posts: 1,755	B787 - General Discussion Sept 7, 2020 20:00:56 GMT 1 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by marlibu on Sept 7, 2020 20:00:56 GMT 1 so it went from 8 to "several hundred"?

kevin5345179 delivered! a340 Posts: 2,498	B787 - General Discussion Sept 7, 2020 23:10:27 GMT 1 addasih likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by kevin5345179 on Sept 7, 2020 23:10:27 GMT 1

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B787 - General Discussion Sept 8, 2020 18:16:34 GMT 1 FabienA380 and addasih like this

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Post by kevin5345179 on Sept 8, 2020 18:16:34 GMT 1

During fabrication in Salt Lake of the 787’s horizontal tail — known as the stabilizer — engineers discovered earlier this year that “certain components were clamped together during the build process with greater force than specified,” potentially leaving the structure with gaps between components wider than the allowable specification, Boeing said.

The issue “may lead to premature aging of the part,” meaning the horizontal tail structure, Boeing said.

www.seattletimes.com/business/boeing-aerospace/boeing-admits-a-new-quality-issue-on-the-787-and-tallies-more-737-max-cancellations/

bmw801 Cabin First Flight Posts: 1,305	B787 - General Discussion Sept 8, 2020 21:13:10 GMT 1 addasih likes this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by bmw801 on Sept 8, 2020 21:13:10 GMT 1

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B787 - General Discussion Sept 8, 2020 21:37:58 GMT 1

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Post by ff on Sept 8, 2020 21:37:58 GMT 1

So who makes these horizontal stabilizer?

Reuters said Italians did, "In October 2010, Boeing said it would tell suppliers to halt deliveries of sections for its 787 Dreamliner for two weeks because of delays at Alenia, a unit of Italian defense and aerospace company Finmeccanica SpA. Alenia makes the horizontal stabilizer for the tail of the 787."
www.reuters.com/article/us-boeing-dreamliner/special-report-a-wing-and-a-prayer-outsourcing-at-boeing-idUSTRE70J2UX20110120

But Leonardo claim they did it "We designed and build composite horizontal stabilizer and fuselage sections 44 and 46".
www.leonardocompany.com/en/products/aerostrutture-boeing-787-aerostructures

airboche delivered! Posts: 1,548	B787 - General Discussion Sept 9, 2020 15:51:49 GMT 1 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by airboche on Sept 9, 2020 15:51:49 GMT 1 Does anybody know the registrations of those eight airplanes grounded for repairs please?

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B787 - General Discussion Sept 10, 2020 23:53:05 GMT 1 addasih and captaindave like this

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Post by kevin5345179 on Sept 10, 2020 23:53:05 GMT 1

so entire aft section of 787 has issue?

It's not clear what airline the the mechanic worked for, but the technician noticed something wrong on a Boeing 787 Dreamliner while working on the tail of the aircraft. The mechanic noticed a slight dimple, also known as a depression, on the vertical fin, near the spot where it joins with the aircraft's fuselage.

"This depression was located at a joint common to the Main Torque Box (MTB) skin, Rear Spar, and Route Fitting #4. Shims were properly installed prior to drilling of holes," an investigator wrote. "Investigation suggests these shims were later discarded before final fastener installation. Measurement on aircraft prior to rework show un-shimmed gaps up to 0.034.”

“The excessive gap produced a greater than design preload in the affected details,” the report found. “The increased preload combined with the design loads could exceed the limit load capability of the joint.”

The LN’s start at number 1 and go up from there.

“The affected LNs extend to LN 6-687,” the report says, which represents 681 total planes. "689-873, 875-885, 889-890, 895, 896, & 897.”

komonews.com/news/local/report-raises-new-questions-about-structural-integrity-of-boeing-787-dreamliner

Last Edit: Sept 10, 2020 23:56:26 GMT 1 by kevin5345179

kevin5345179 delivered! a340 Posts: 2,498	B787 - General Discussion Sept 11, 2020 0:28:47 GMT 1 FabienA380, addasih, and 2 more like this Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by kevin5345179 on Sept 11, 2020 0:28:47 GMT 1

B787 - General Discussion

Post by kevin5345179 on Aug 28, 2020 4:57:28 GMT 1

Post by kevin5345179 on Sept 7, 2020 7:59:35 GMT 1

Post by marlibu on Sept 7, 2020 20:00:56 GMT 1

Post by kevin5345179 on Sept 7, 2020 23:10:27 GMT 1

Post by kevin5345179 on Sept 8, 2020 18:16:34 GMT 1

Post by bmw801 on Sept 8, 2020 21:13:10 GMT 1

Post by ff on Sept 8, 2020 21:37:58 GMT 1

Post by airboche on Sept 9, 2020 15:51:49 GMT 1

Post by kevin5345179 on Sept 10, 2020 23:53:05 GMT 1

Post by kevin5345179 on Sept 11, 2020 0:28:47 GMT 1