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Why was there a wall near runway at S Korea plane crash airport?

bbc.com

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Re: Why was there a wall near runway at S Korea plane crash airport?

#21

Post by gazchop »

thekevan wrote: post #20
gazchop wrote: post #7

I think this is disingenuous reporting. It’s too early to actually draw a conclusion. We should wait for the full investigation. There are a large number of compounding problems here. That was just the last one.

"... the significance of the concrete wall's location about 250m (820ft) off the end of the runway." "...the runway design "absolutely (did) not" meet industry best practices, which preclude any hard structure within at least 300m (984ft) of the end of the runway." "it emerged that remarks in Muan International Airport's operating manual, uploaded early in 2024, said the concrete embankment was too close to the end o…

I don’t disagree with that. It is a compounding issue but I am much more interested in what happened up to that point. Many many small things or one big thing went wrong for it to even get to that point.

Re: Why was there a wall near runway at S Korea plane crash airport?

#22

Post by notimetorelax »

Towaway69 wrote: post #12
mcflubbins wrote: post #3

I was wondering the same thing and suspected it was some safety feature (better for a plane to smack into said wall instead of crash into some populated area, etc) I had no idea he had to make the approach in the opposite direction.

This: > no idea he had to make the approach in the opposite direction. So the wall is actually at the beginning of the runway. That wall was never never meant to be at the end of a landing but at the start of landing. I don't understand why this isn't made clear. Basically the runway was used against the design specifications.

Runways are approached from both ends depending on the wind.

Re: Why was there a wall near runway at S Korea plane crash airport?

#23

Post by ra »

Towaway69 wrote: post #12
mcflubbins wrote: post #3

I was wondering the same thing and suspected it was some safety feature (better for a plane to smack into said wall instead of crash into some populated area, etc) I had no idea he had to make the approach in the opposite direction.

This: > no idea he had to make the approach in the opposite direction. So the wall is actually at the beginning of the runway. That wall was never never meant to be at the end of a landing but at the start of landing. I don't understand why this isn't made clear. Basically the runway was used against the design specifications.

That's not correct. A runway can be used in either direction, if you look on Google maps you can see the runway at Jeju has markings at both ends including a number (denoting it's compass heading) - both ends are usable.

You always want to land with a headwind and never a tailwind, so ATC will use whichever end is favorable for the current conditions.

In this case, if they attempted to land with a tailwind then the on-heading vector component of wind velocity must be added to the airspeed to get the ground speed... whilst this was a contributing factor to the accident, it's not something to focus on.

There will be a thorough investigation but it will take some time to get answers.

Re: Why was there a wall near runway at S Korea plane crash airport?

#24

Post by K0balt »

Towaway69 wrote: post #12
mcflubbins wrote: post #3

I was wondering the same thing and suspected it was some safety feature (better for a plane to smack into said wall instead of crash into some populated area, etc) I had no idea he had to make the approach in the opposite direction.

This: > no idea he had to make the approach in the opposite direction. So the wall is actually at the beginning of the runway. That wall was never never meant to be at the end of a landing but at the start of landing. I don't understand why this isn't made clear. Basically the runway was used against the design specifications.

Idk about this particular airport but it is nearly universal that runways are used from both ends. The idea is to land into the wind.

We don’t know why the pilot elected to double back instead of go around. There may have been indications of a progressive failure that indicated that course of action, but it does seem hasty. That haste may have caused them to not be able to set up a stabilized, minimum speed approach, and may have contributed to the long touchdown, which certainly was a contributing factor.

Still, a 14 ft high concrete structure within 300M of a runway end is unusual, and does not fit the standard for frangable structures which is the guidance for runway aligned equipment.

Re: Why was there a wall near runway at S Korea plane crash airport?

#25

Post by ajmurmann »

Towaway69 wrote: post #12
mcflubbins wrote: post #3

I was wondering the same thing and suspected it was some safety feature (better for a plane to smack into said wall instead of crash into some populated area, etc) I had no idea he had to make the approach in the opposite direction.

This: > no idea he had to make the approach in the opposite direction. So the wall is actually at the beginning of the runway. That wall was never never meant to be at the end of a landing but at the start of landing. I don't understand why this isn't made clear. Basically the runway was used against the design specifications.

Was the runway designed to only be used one way or was this just the it opposite direction of how it was being used at that moment? I understand that at least some airports change the direction based on wind.

Re: Why was there a wall near runway at S Korea plane crash airport?

#26

Post by [deleted] »

Towaway69 wrote: post #12
mcflubbins wrote: post #3

I was wondering the same thing and suspected it was some safety feature (better for a plane to smack into said wall instead of crash into some populated area, etc) I had no idea he had to make the approach in the opposite direction.

This: > no idea he had to make the approach in the opposite direction. So the wall is actually at the beginning of the runway. That wall was never never meant to be at the end of a landing but at the start of landing. I don't understand why this isn't made clear. Basically the runway was used against the design specifications.

[deleted]

Re: Why was there a wall near runway at S Korea plane crash airport?

#27

Post by fl7305 »

gazchop wrote: post #13
mcflubbins wrote: post #3

I was wondering the same thing and suspected it was some safety feature (better for a plane to smack into said wall instead of crash into some populated area, etc) I had no idea he had to make the approach in the opposite direction.

They already botched a gear down landing, which is almost never mentioned. They retracted the gear and did a teardrop go around from a headwind into a tailwind belly flop. Stinks of bad crew resource management and ATC which is why the ATC and airline for raided by SK officials.

What should ATC have done differently?

Re: Why was there a wall near runway at S Korea plane crash airport?

#28

Post by [deleted] »

Towaway69 wrote: post #12
mcflubbins wrote: post #3

I was wondering the same thing and suspected it was some safety feature (better for a plane to smack into said wall instead of crash into some populated area, etc) I had no idea he had to make the approach in the opposite direction.

This: > no idea he had to make the approach in the opposite direction. So the wall is actually at the beginning of the runway. That wall was never never meant to be at the end of a landing but at the start of landing. I don't understand why this isn't made clear. Basically the runway was used against the design specifications.

[deleted]

Re: Why was there a wall near runway at S Korea plane crash airport?

#30

Post by s5300 »

Mistletoe wrote: post #4

I don’t know why people keep fixating on this. Airplanes can’t skid out of the airport into the surrounding city. Mistakes were made, but this isn’t one of them. I suspect it is people trying to deflect blame from pilot error, which seems by far the most likely issue. They did none of the things you should do to stop a plane.

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