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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

#141

Post by hervature »

secfirstmd wrote: post #54
IgorPartola wrote: post #25

Earlier quoted context omitted.

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?

As a European who tuned in to US News for the US election I thought that was crazy. I'd watch a few of the right media orgs to see what they were saying and then stay on CNN/MSNBC etc for most of it. It's mad how so much of it every hour was essentially people just regurgitating stuff to fill the time. I mean OK what's happening is important but if you can't fill the airtime why not shift to other news (as in everyth…

Reuters TV, 30 minutes every day, about 15-20 stories from around the globe but focusing on US. Read by a faceless person in an emotionless voice. That's what I do.

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

#142

Post by reddotX »

leesalminen wrote: post #116
terramex wrote: post #113

Almost identical incident happened 3 years ago - the same type (B777-200), the same engine (PW4077), the same operator (United Airlines), the same side (right engine), the same failure (unconfined engine failure). https://avherald.com/h?article=4b4e8ca7&opt=0 I would not be surprised if the whole fleet of this type/engine gets grounded for some time.

And I’m supposed to fly on a 777-200 to Denver operated by United in just a few days. Yay!

good luck!

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

#143

Post by valuearb »

leesalminen wrote: post #116
terramex wrote: post #113

Almost identical incident happened 3 years ago - the same type (B777-200), the same engine (PW4077), the same operator (United Airlines), the same side (right engine), the same failure (unconfined engine failure). https://avherald.com/h?article=4b4e8ca7&opt=0 I would not be surprised if the whole fleet of this type/engine gets grounded for some time.

And I’m supposed to fly on a 777-200 to Denver operated by United in just a few days. Yay!

The 777 has been flying for 25 years with almost no fatal accidents. Unless your flight will be flying over Russian anti-aircraft missile batteries or through a wormhole above Malaysia, you should be perfectly safe.

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

#144

Post by almost_usual »

GekkePrutser wrote: post #135

That's crazy, in the Netherlands today there was another flight that dropped engine parts (much smaller though, they're said to have been turbine blades) that hit cars and people. It was also an airliner (747-400). Considering how rare an occurrence is, it's really weird to have both happen on the exact same day. https://www.airlive.net/breaking-turbine-blades-of-a-boeing-... By the way I'm surprised that fire keeps…

Poisson distribution, higher probability of short periods between failures than long ones.

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

#145

Post by systematical »

secfirstmd wrote: post #112
systematical wrote: post #94

Earlier quoted context omitted.

PBS news hour is a total of 6 hours per week (weekend shows are 30 minutes each). In those 6 hours, they cover more than any one of the 24 hour news networks. You're killing your mind watching 24 hour news networks, any of them.

Thanks, yeh I think when I want US News I might look at those instead

Catch live and past episodes on YouTube.

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

#146

Post by lisper »

tialaramex wrote: post #140
infodocket wrote: post #26

You can hear the air/ground communications for this flight here via LiveATC.net. The pilots declare an emergency and then a mayday call beginning at 1:15 of the audio. https://forums.liveatc.net/index.php?action=dlattach;topic=1...

"Mayday" is the internationally agreed code, so that's one reason to use that - but US accident investigators also noticed a pattern that American pilots are often too reluctant to declare emergency status when it's appropriate as it is here, because they feel it's "not that bad" yet. Having them say it's an emergency without saying "Mayday" is good enough and might mean a few more cases that should have been emergen…

Listening to the audio, the pilot first says, "We've experienced an engine failure, need a turn." ATC does not respond, so he calls again and says "Mayday" in order to unequivocally get their attention.

There are actually two different emergency calls. There is "mayday", and there is "pan-pan", which is a less urgent version of "mayday", but that is hardly ever used.

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

#147

Post by vvanders »

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.

Have a peek a metastability[1], any time a digital system crosses a clock domain there's basically statistics making sure the whole thing doesn't fall over.

From need a better MTBF? Throw a couple more inline flip-flops.

[1] https://en.m.wikipedia.org/wiki/Metastability_(electronics)

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

#149

Post by guidedlight »

terramex wrote: post #113

Almost identical incident happened 3 years ago - the same type (B777-200), the same engine (PW4077), the same operator (United Airlines), the same side (right engine), the same failure (unconfined engine failure). https://avherald.com/h?article=4b4e8ca7&opt=0 I would not be surprised if the whole fleet of this type/engine gets grounded for some time.

The failure was blamed on lack of training for inspectors.

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

#150

Post by m463 »

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?

How about the 1000 watermarks on every resampled movie and jpg?
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