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

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

#121

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.

I thought it was 'confined' if the containment ring did its job? If it had failed (like not supposed to) it would have been a whole lot worse.

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

#122
post #43

Earlier quoted context omitted.

Not clear to me that you'd design a commercial turbofan aircraft with one engine if you eliminated reliability requirements. You need to feed air to the engine and, to the degree you have wings, might as well have 2 engines.

The idea that the engines need to sit on the wings like they do is something seems important, because it's so often done, but is actually not necessary. You can put a single engine in the tail, or on top of the cabin, or on the top of the cockpit, or underneath. They go on the wings because when you need two (for redundancy) it's a good place to put them for balance, and because it makes them nicely accessible for ma…

Trijets are cool!

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

#123
post #120

Earlier quoted context omitted.

Am I the only one who get really tired of this kind of sarcasm?

The same point could be made without sarcasm. Would you object, then?

Without the sarcasm it would just be restating exactly what the parent comment said.

I agree with the OP: if we disapprove of posts that only say “same” or “me too” we should probably also discourage posts that dress exactly that in sarcasm.

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

#124

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!

At least it's unlikely to be that 777-200.

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

#126
post #101

Earlier quoted context omitted.

Not only fly but climb. Commercial aircraft are required to fly safely should one of the two engines fail at any point of the flight, including takeoff at speeds beyond v1.

For the uninformed: V1: Speed at which the take off attempt should no longer be aborted Vr: Speed at which the plane should be pitched up (rotated) V2: Speed at which the plane can safely climb with one engine If an engine fails after V1 the runway is supposed to have sufficient length that you can hit Vr, rotate, and be 35 feet off the ground and traveling at V2 before you run out of tarmac even with a single engine…

Fair enough and my memory may be fuzzy but I see quite a few references to V1 as being the minimum single engine takeoff speed.

https://skybrary.aero/bookshelf/books/493.pdf (page 2)

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

#128
post #102

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...

Curious, I had always heard it should be repeated 3 times, but here they’re consistently repeating just twice.

You’ll find that there’s a gap between what the books say about ATC comms and how things are actually done. No one is being pedantic in an emergency.

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

#129
post #57

Oddly enough, something similar happened today just a few kilometers from where i live. https://www.aviation24.be/airlines/longtail-aviation/boeing-...

today was quite weird for Boeing airplanes, as well as for United. United Flight 1832 (a 737-8) from Cancun to Houston had a single engine shutdown on the way and had to divert to New Orleans.

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

#130

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.

Michaela’s video is terrifying.
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