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UPS plane crashes near Louisville airport

avherald.com

161–170 of 469 posts

Re: UPS plane crashes near Louisville airport

#161

Earlier quoted context omitted.

> Having cameras pointed at the engines/wings like rearview mirrors would be helpful. Helpful in what way? What are the pilots going to do with the information?

They won't have to rely on cabin crew description of what they see over the wings or have to send one of the pilots to take a look (see UA1175).

Okay. So you mean in general it would help in some cases. Not that in this case it would have helped.

> see UA1175

I'm familiar with the case you are mentioning. I'm also aware that they sent a jump seater to look at the engine. But did seeing the engine provide them with any actionable information? Did they fly the airplane differently than if they would have just seen the indications available in the cockpit?

Re: UPS plane crashes near Louisville airport

#162
post #78

Earlier quoted context omitted.

Isn't there any margin? Does it calculate stopping before end of runway or before causing damage? Surely uncertainty about the situation contributes to defaulting to committing, but what if it's a passenger plane and at V1 pilots know they've lost power? Wouldn't veering into highway at 30 mph be weighted against certain, big loss of life? Edit: I now see that this has been partially answered by uncle comment

V1 is the decision speed with respect to a single engine failure in a multi-engine aircraft. It's the speed below rotation speed at which the decision to abort safely can no longer be made. Captains can make the decision to abort the takeoff in the case of absolute power loss or for 'failure to fly' (where the aircraft is clearly not going to fly, e.g. the elevator/pitch controls aren't responding). But the training…

> abort safely

That's what I'm getting at. I want to abort unsafely. Imagine 400 meters of grass field after the end of the runway, and a water body. I'm asking wether such factors are accounted for, or if plane on ground beyond runway does-not-compute.

Re: UPS plane crashes near Louisville airport

#163
post #108

Earlier quoted context omitted.

Zoning guidance generally prohibits land use near an airport that has a high density of people, precisely to limit casualties during an event like this. Industrial would be permitted while residential and commercial use is not. Scarily there are communities that have ignored such logic and permitted dense residential development right next to an airport.

You can always come up with some pretext to justify things by ignoring the other side of the equation. How many lives do the man hours spent commuting, or toiling away to afford higher rents waste? IDK how the math pencils out, but an attempt ought to be made before drawing conclusions.

[flagged]

Re: UPS plane crashes near Louisville airport

#164
post #108

Earlier quoted context omitted.

Zoning guidance generally prohibits land use near an airport that has a high density of people, precisely to limit casualties during an event like this. Industrial would be permitted while residential and commercial use is not. Scarily there are communities that have ignored such logic and permitted dense residential development right next to an airport.

> Zoning guidance generally prohibits land use near an airport that has a high density of people Queens, NY has entered the chat…

>Queens, NY has entered the chat…

You’re correct, but at least LaGuardia airport generally has takeoffs over water.

LaGuardia aircraft landings may happen over dense apartment buildings, but less likely for catastrophic damage (glide path, less fuel, engines are <10% throttle, etc)

Re: UPS plane crashes near Louisville airport

#165
post #78

Earlier quoted context omitted.

Isn't there any margin? Does it calculate stopping before end of runway or before causing damage? Surely uncertainty about the situation contributes to defaulting to committing, but what if it's a passenger plane and at V1 pilots know they've lost power? Wouldn't veering into highway at 30 mph be weighted against certain, big loss of life? Edit: I now see that this has been partially answered by uncle comment

There is some margin in the calculations. But the training is very very clear, before V1 you must abort and after V1 you must continue. No discussion, no decision to make. You call V1, hands go off the throttles and no matter what you're going to fly. The margin is for example that the plane must not just be able to fly, but also reach a minimum climb gradient to clear obstacles with a bit of safety margin. There is…

[flagged]

Re: UPS plane crashes near Louisville airport

#166
post #106

The AVHerald is usually the best source for these things, rather than MSM: https://avherald.com/h?article=52f5748f&opt=0 > Ground observers reported the aircraft had been delayed for about two hours for work on the left hand engine (engine #1), the engine #1 separated during the takeoff run, the center engine emitted streaks of flames, the aircraft impacted a UPS warehouse and ploughed through other facilities before…

This is likely relevant

https://www.vanityfair.com/news/2015/11/airplane-maintenance...

TDLR 10-20 years ago, the US started allowing maintenance of domestic planes in foreign countries, outside the reach of the FAA’s inspections

Re: UPS plane crashes near Louisville airport

#167
post #65

Earlier quoted context omitted.

> Do runways have some sort of barrier between them and the next "important" thing. It seems like that would be prudent both for cases like this Ha, Jeju Air Flight 2216 smashed into a barrier on the second landing attempt in Muan last year [0], and people commented "How could there be a barrier at the end of the runway, so obviously stupid, irresponsible", etc. Now a plane does not smash into a barrier at the end of…

Or a ramp with "one-way teeth" that stops it with gravity and stops it from sliding back down with teeth.

Sounds like a much more substantial runaway truck ramp

Re: UPS plane crashes near Louisville airport

#168

Earlier quoted context omitted.

The last MD-11 crash with deaths was in 2009 and the last DC-10 kerfuffle was when their unapproved replacement parts fell on the runway and killed the Concorde. I wonder if flight 232 gave them a bad name - everybody seems to know that accident. Looks like have a good record otherwise.

The DC-10 had some significant design flaws at the start.

e.g. https://mondortiz.com/the-problematic-cargo-door-of-the-doug...

Re: UPS plane crashes near Louisville airport

#169
post #106

The AVHerald is usually the best source for these things, rather than MSM: https://avherald.com/h?article=52f5748f&opt=0 > Ground observers reported the aircraft had been delayed for about two hours for work on the left hand engine (engine #1), the engine #1 separated during the takeoff run, the center engine emitted streaks of flames, the aircraft impacted a UPS warehouse and ploughed through other facilities before…

This is likely relevant https://www.vanityfair.com/news/2015/11/airplane-maintenance... TDLR 10-20 years ago, the US started allowing maintenance of domestic planes in foreign countries, outside the reach of the FAA’s inspections

There's a lag time between such cost saving measures and piles of dead people.

See also how FAA allowed Boeing to oversee its own certification for MAX.

Re: UPS plane crashes near Louisville airport

#170

Earlier quoted context omitted.

Well, there's a very big difference between "Engine fire: some of the combustion chamber's heat and flame has breached containment" and, say, "Engine fire: the engine has exploded, catastrophically damaging your wing which is now visibly on fire". However, both things are reported in the cockpit as ENG FIRE. There's also a very big difference between "Engine failure: something has damaged or jammed enough components…

> There's also a very big difference between "Engine failure: something has damaged or jammed enough components that the turbines are no longer spinning fast enough to produce thrust or drive the generators" and "Engine failure: the engine is no longer attached to the aircraft, which is why it is no longer producing thrust". However, both things are reported in the cockpit as ENG FAIL. What is the difference?

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