World News

39199 readers

2068 users here now

A community for discussing events around the World

Rules:

Rule 1: posts have the following requirements:
- Post news articles only
- Video links are NOT articles and will be removed.
- Title must match the article headline
- Not United States Internal News
- Recent (Past 30 Days)
- Screenshots/links to other social media sites (Twitter/X/Facebook/Youtube/reddit, etc.) are explicitly forbidden, as are link shorteners.
Rule 2: Do not copy the entire article into your post. The key points in 1-2 paragraphs is allowed (even encouraged!), but large segments of articles posted in the body will result in the post being removed. If you have to stop and think "Is this fair use?", it probably isn't. Archive links, especially the ones created on link submission, are absolutely allowed but those that avoid paywalls are not.
Rule 3: Opinions articles, or Articles based on misinformation/propaganda may be removed. Sources that have a Low or Very Low factual reporting rating or MBFC Credibility Rating may be removed.
Rule 4: Posts or comments that are homophobic, transphobic, racist, sexist, anti-religious, or ableist will be removed. “Ironic” prejudice is just prejudiced.
Posts and comments must abide by the lemmy.world terms of service UPDATED AS OF 10/19
Rule 5: Keep it civil. It's OK to say the subject of an article is behaving like a (pejorative, pejorative). It's NOT OK to say another USER is (pejorative). Strong language is fine, just not directed at other members. Engage in good-faith and with respect! This includes accusing another user of being a bot or paid actor. Trolling is uncivil and is grounds for removal and/or a community ban.

Similarly, if you see posts along these lines, do not engage. Report them, block them, and live a happier life than they do. We see too many slapfights that boil down to "Mom! He's bugging me!" and "I'm not touching you!" Going forward, slapfights will result in removed comments and temp bans to cool off.

Rule 6: Memes, spam, other low effort posting, reposts, misinformation, advocating violence, off-topic, trolling, offensive, regarding the moderators or meta in content may be removed at any time.
Rule 7: We didn't USED to need a rule about how many posts one could make in a day, then someone posted NINETEEN articles in a single day. Not comments, FULL ARTICLES. If you're posting more than say, 10 or so, consider going outside and touching grass. We reserve the right to limit over-posting so a single user does not dominate the front page.

We ask that the users report any comment or post that violate the rules, to use critical thinking when reading, posting or commenting. Users that post off-topic spam, advocate violence, have multiple comments or posts removed, weaponize reports or violate the code of conduct will be banned.

All posts and comments will be reviewed on a case-by-case basis. This means that some content that violates the rules may be allowed, while other content that does not violate the rules may be removed. The moderators retain the right to remove any content and ban users.

Lemmy World Partners

News [email protected]

Politics [email protected]

World Politics [email protected]

Recommendations

How to spot Misinformation and Propaganda

For Firefox users, there is media bias / propaganda / fact check plugin.

https://addons.mozilla.org/en-US/firefox/addon/media-bias-fact-check/

Consider including the article’s mediabiasfactcheck.com/ link

founded 2 years ago

MODERATORS

[email protected]

231

Boeing faces fresh safety questions after engine fire on flight from Scotland (www.theguardian.com)

submitted 4 months ago by [email protected] to c/[email protected]

23 comments fedilink hide all child comments

Boeing faces fresh questions about the safety of its aircraft after an engine fire on a transatlantic flight from Edinburgh caused an emergency landing soon after takeoff.

Flames were seen by passengers briefly shooting from the engine of a Delta Air Lines 767 soon after it took off for New York in February last year, after a turbine blade broke off during takeoff.

The flames subsided while the plane was airborne but it made an emergency landing at Prestwick airport south of Glasgow, where ground crew noticed fuel leaking from the plane’s right wing.

The Air Accidents Investigation Branch, the UK government agency that investigates aviation safety, has written to the Federal Aviation Administration in the US asking it to take action with Boeing, which has its headquarters in Virginia.

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 7 points 4 months ago (17 children)

Boeing doesn't make engines.

[–] [email protected] 52 points 4 months ago (1 children)

Nobody is accusing Boeing for the turbine failure. They are questioning Boeing's drain tube track design failure. Source

According to the (Air Accidents Investigation Branch) AAIB, a high-pressure turbine blade had "fractured" in the 767's right engine, damaging a further five blades.

Vibrations from the "out of balance" turbine led a section of the wing to rupture, causing fuel to leak out, which was then ignited by the engine's exhaust.

The AAIB's report questioned why the vibrations from a broken engine were sufficient to fracture the Boeing 767's "slat track housing drain tube."

At the end of its report, the AAIB said: "It is recommended that the Federal Aviation Administration requires the Boeing Airplane Company to demonstrate that following this serious incident, the design of the slat track housing drain tube on the Boeing 767 family of aircraft continues to comply with the certification requirements for large transport aircraft."

[–] Zipitydew 6 points 4 months ago* (last edited 4 months ago)

The new design was vibration tested for five hours both laterally and vertically without failure and the system had a first mode resonant frequency response at 170 Hz and a second mode at 260 Hz. Analysis of the drain tube at 165 Hz demonstrated that with a 5g or 10g input load, the drain tube would fracture after either 200,000 or 21,000 fatigue cycles respectively, at the bend adjacent to the slat track housing. This equates to approximately either 20 minutes or 2 minutes of operation.

Doesn't seem to be major issue there either. Above is a quote from the AAIB report. They're talking about an already redesigned and upgraded drain this plan had installed in 2012. It was found the redesigned part performed better than required. Even when damaged on purpose before testing. The recommendation here is more like hey FAA maybe you should update the test requirements. 20 minutes or 2 minutes of holding up while shit is going wrong might not be enough.

https://asn.flightsafety.org/wikibase/308139

But even with all this going on the engine was making thrust. Pilot was just worried about flying across the Atlantic with a vibration they noticed was getting worse after 20 minutes in the air. They suspected but didn't even know the engine was blown until back on the ground. The fire was happening in the exhaust stream and not within any part of the plane itself.

load more comments (15 replies)