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United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

avherald.com

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Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#261

Post by ralph84 »

ashtonkem wrote: post #199
codingdave wrote: post #169

Earlier quoted context omitted.

Another way of looking at it is that after flying and accumulating 25 years of wear and tear without major incident, we now have seen a repeatable flaw that these aircraft may encounter due to their age.

Engine age isn’t the same as airframe age, and components don’t age linearly with calendar time; they age with flight hours or pressurization cycles. Without access to a log book, it’s impossible to know how old an engine is or when it was last overhauled.

Indeed, for a 25-year-old airframe with the utilization it would have at a major carrier like United there's basically no way the engines hanging on it now could be the same engines it was delivered with.

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#262

Post by bluGill »

just_steve_h wrote: post #65
Dirlewanger wrote: post #46

Earlier quoted context omitted.

One thing that sets software apart from other engineering disciplines is that they are grounded in physics (bits running on a semiconductor doesn't matter for this discussion) and have been around (in some form) for thousands of years. How do we know if a design is sound? We can check it by doing the math. How do we know if a program is sound (what does that even mean? There's our first problem)? Well, we rely on a l…

I'm wading into waters that are way over my head here, but my understanding is that it is possible for software to be provably correct, in the mathematical sense of "proof." I'm well aware of the admixture of folklore, experience, and caffeine-fueled inspiration that constitutes much of the software that runs our world.

You can, but first we need to figure out what correct is in the first place. I can prove hello world doesn't overflow buffers, but it is a bit harder to prove that my font renders the letters vs some random scribbles.

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#263

Post by nickt »

larkinrichards wrote: post #11

I really appreciate focused news sites like avherald. Just the facts, a collection of photos and videos, straightforward. The video of the landing & the passengers cheering—- that huge sigh of relief. Brings a smile to my face.

Just read the comments, that’ll fix your optimism!

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#264

Post by malandrew »

IgorPartola wrote: post #25
larkinrichards wrote: post #11

I really appreciate focused news sites like avherald. Just the facts, a collection of photos and videos, straightforward. The video of the landing & the passengers cheering—- that huge sigh of relief. Brings a smile to my face.

What, you don’t like the anchor people on TV asking each other how they feel about every piece of news and making horrible puns at every opportunity? Or having expected announcements be reported as BREAKING NEWS?

Appropriate: https://www.smbc-comics.com/comic/reactive

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#265

Post by bluGill »

bonestamp2 wrote: post #75
mrfusion wrote: post #23

Earlier quoted context omitted.

How do you account for oceans?

You stay close to land as much as possible. For example, LA to Tokyo, you basically fly up the west coast, give Canada's west coast a high five, and then come around below Alaska. It's less direct than it could be, but it's much safer in the event of an emergency.

It is more.direct than it sounds though because the earth is round and so the shortest distance between two points curves.

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#266

Post by eptcyka »

milankragujevic wrote: post #223
Fogest wrote: post #205

Earlier quoted context omitted.

BREAKING NEWS: More people died of COVID today. I see see often headlines in my Google news feed saying something along those lines. I've stopped clicking on YouTube videos that give me no idea what they are going to be in the thumbnail/title. For example on Linus Tech Tips second channel ShortCiruit a good chunk of their videos do this. Latest one from 3 years ago in my sub box "I almost hurt myself open this...." a…

Offtopic to OP but regarding Linus Tech Tips: I also stopped watching 90% of all LMG (his company) videos (on all their channels) because of the clickbait forcing me to click onto things that I am not interested in, only to quickly leave the video. I am not going to watch what I don't want to watch whether it has a clickbait thumbnail and title or not, so they just annoy me more with this. I have not voiced my opinio…

There's a fan community? I was always under the impression that his videos served as glorified ads for consumer tech. The technical insight delivered was skin deep. Didn't he brag about a 20 drive NAS one week only to cry about the raid0 config dying and taking down a lot of their footage the next week?

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#267

Post by sillysaurusx »

ajayyy wrote: post #258
Fogest wrote: post #239

Earlier quoted context omitted.

Yeah it seems like almost all of their videos are using clickbaity titles now especially on the secondary channels like ShortCiruit. My viewership of their videos has really dropped. I'm sure they have seen results from gaming the recommended videos but I'd be interested to see if it has affected how many average viewers they get from the subscribed people. Man first you had to get AdBlock, and recently it feels nece…

Not the same as what you wanted, but this one can help: https://github.com/pietervanheijningen/clickbait-remover-for... I do think it would be cool though to expand SponsorBlock into more crowd-sourced things, since there is already a community of people willing to help.

That's quite a name! I thought it was a chrome extension at first. Thanks for pointing it out.

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#268

Post by sn41 »

dmoy wrote: post #134

That quoted ground observer. Do they work for the NTSB or something? I am 110% certain that if I saw a plane on fire in the sky, I would not have the presence of mind to remember the term "cloud deck", let alone the rest of those details. Ground observer: "Good sir, I do say that the cloud deck was quite low so I didn't get a good look, but the engine was mildly louder than usual, and possibly had smoke, but perhaps…

Pretty sure he was a pilot or a sea captain. I definitely would not refer to the right hand engine as "starboard engine".

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#269

Post by gamegoblin »

nyolfen wrote: post #244
nl wrote: post #207

Earlier quoted context omitted.

Briefly: if you expect 10 failures in 10 years evenly distributed then you would expect 1 per year. If it is a Possion distribution then you'd expect them to bunch up and get years with none, then them concentrated over a few years. Possion distributions usually imply a time factor. That's concerning in this case as it implies maintenance isn't effective.

how would this apply to disparate aircraft on different maintenance cycles?

It has nothing to do with aircraft, and everything to do with random chance. Basically, it is more likely for time-series data to have clumps than to be perfectly even.

Imagine you throw a three darts a board. Which is more likely: all darts are equidistant, or 2 of the darts are closer to each other than the 3rd? Now imagine it's 3 events in time rather than 3 darts on a board. And the same logic applies to an arbitrary number of events, of course.

Re: United B772 at Denver on Feb 20th 2021, engine inlet separates from engine

#270

Post by Fogest »

ajayyy wrote: post #258
Fogest wrote: post #239

Earlier quoted context omitted.

Yeah it seems like almost all of their videos are using clickbaity titles now especially on the secondary channels like ShortCiruit. My viewership of their videos has really dropped. I'm sure they have seen results from gaming the recommended videos but I'd be interested to see if it has affected how many average viewers they get from the subscribed people. Man first you had to get AdBlock, and recently it feels nece…

Not the same as what you wanted, but this one can help: https://github.com/pietervanheijningen/clickbait-remover-for... I do think it would be cool though to expand SponsorBlock into more crowd-sourced things, since there is already a community of people willing to help.

Unfortunately this one seems to just change the casing of the title and then grabs a frame from the video to use for the thumbnail. I find that the thumbnail at least sometimes contains something useful whereas this may be counterproductive.

With YouTube you can hover over the video thumbnail and see a short preview of the video play so that aspect is already kinda covered by YouTube itself.

It's definitely getting closer to what I was talking about but unfortunately falls short.

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